1245876042 has 32 divisors (see below), whose sum is σ = 2641754304. Its totient is φ = 390355200.

The previous prime is 1245875987. The next prime is 1245876077. The reversal of 1245876042 is 2406785421.

It is a super-2 number, since 2×1245876042² = 3104414224059171528, which contains 22 as substring.

It is an unprimeable number.

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, 75192 + ... + 90252.

It is an arithmetic number, because the mean of its divisors is an integer number (82554822).

Almost surely, 2^1245876042 is an apocalyptic number.

1245876042 is an abundant number, since it is smaller than the sum of its proper divisors (1395878262).

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

1245876042 is a wasteful number, since it uses less digits than its factorization.

1245876042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15894.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 1245876042 is about 35296.9693033269. The cubic root of 1245876042 is about 1076.0314000916.

The spelling of 1245876042 in words is "one billion, two hundred forty-five million, eight hundred seventy-six thousand, forty-two".