1242004920 has 128 divisors (see below), whose sum is σ = 4223923200. Its totient is φ = 289626624.

The previous prime is 1242004913. The next prime is 1242004927. The reversal of 1242004920 is 294002421.

1242004920 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1242004913) and next prime (1242004927).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242004927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8689 + ... + 50591.

It is an arithmetic number, because the mean of its divisors is an integer number (32999400).

Almost surely, 2^1242004920 is an apocalyptic number.

1242004920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242004920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2111961600).

1242004920 is an abundant number, since it is smaller than the sum of its proper divisors (2981918280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242004920 is a wasteful number, since it uses less digits than its factorization.

1242004920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41949 (or 41945 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1242004920 is about 35242.0901763786. The cubic root of 1242004920 is about 1074.9157806745.

The spelling of 1242004920 in words is "one billion, two hundred forty-two million, four thousand, nine hundred twenty".