1242428660 has 48 divisors (see below), whose sum is σ = 2880626112. Its totient is φ = 446342400.

The previous prime is 1242428659. The next prime is 1242428687. The reversal of 1242428660 is 668242421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242428660.

It is a congruent number.

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, 15761 + ... + 52280.

It is an arithmetic number, because the mean of its divisors is an integer number (60013044).

Almost surely, 2^1242428660 is an apocalyptic number.

1242428660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242428660 is an abundant number, since it is smaller than the sum of its proper divisors (1638197452).

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

1242428660 is a wasteful number, since it uses less digits than its factorization.

1242428660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68144 (or 68142 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 1242428660 is about 35248.1015091593. The cubic root of 1242428660 is about 1075.0380112754.

The spelling of 1242428660 in words is "one billion, two hundred forty-two million, four hundred twenty-eight thousand, six hundred sixty".