1204142240 has 96 divisors (see below), whose sum is σ = 3262581504. Its totient is φ = 411402240.

The previous prime is 1204142237. The next prime is 1204142273. The reversal of 1204142240 is 422414021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346592 + ... + 350048.

It is an arithmetic number, because the mean of its divisors is an integer number (33985224).

Almost surely, 2^1204142240 is an apocalyptic number.

1204142240 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 1204142240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1631290752).

1204142240 is an abundant number, since it is smaller than the sum of its proper divisors (2058439264).

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

1204142240 is a wasteful number, since it uses less digits than its factorization.

1204142240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790 (or 3782 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1204142240 is about 34700.7527295879. The cubic root of 1204142240 is about 1063.8798835516.

Adding to 1204142240 its reverse (422414021), we get a palindrome (1626556261).

The spelling of 1204142240 in words is "one billion, two hundred four million, one hundred forty-two thousand, two hundred forty".