1242895929 has 16 divisors (see below), whose sum is σ = 1809791424. Its totient is φ = 752460800.

The previous prime is 1242895909. The next prime is 1242895933. The reversal of 1242895929 is 9295982421.

It is a cyclic number.

It is not a de Polignac number, because 1242895929 - 2⁸ = 1242895673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242895909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11689 + ... + 51209.

It is an arithmetic number, because the mean of its divisors is an integer number (113111964).

Almost surely, 2^1242895929 is an apocalyptic number.

It is an amenable number.

1242895929 is a deficient number, since it is larger than the sum of its proper divisors (566895495).

1242895929 is a wasteful number, since it uses less digits than its factorization.

1242895929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40488.

The product of its digits is 933120, while the sum is 51.

The square root of 1242895929 is about 35254.7291721267. The cubic root of 1242895929 is about 1075.1727658871.

The spelling of 1242895929 in words is "one billion, two hundred forty-two million, eight hundred ninety-five thousand, nine hundred twenty-nine".