1242514020 has 384 divisors, whose sum is σ = 4285757952. Its totient is φ = 265420800.

The previous prime is 1242513997. The next prime is 1242514051. The reversal of 1242514020 is 204152421.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17020704 + ... + 17020776.

It is an arithmetic number, because the mean of its divisors is an integer number (11160828).

Almost surely, 2^1242514020 is an apocalyptic number.

1242514020 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 1242514020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2142878976).

1242514020 is an abundant number, since it is smaller than the sum of its proper divisors (3043243932).

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

1242514020 is a wasteful number, since it uses less digits than its factorization.

1242514020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1242514020 is about 35249.3123337179. The cubic root of 1242514020 is about 1075.0626305677.

Adding to 1242514020 its reverse (204152421), we get a palindrome (1446666441).

It can be divided in two parts, 124251 and 4020, that added together give a triangular number (128271 = T₅₀₆).

The spelling of 1242514020 in words is "one billion, two hundred forty-two million, five hundred fourteen thousand, twenty".