1257104942 has 8 divisors (see below), whose sum is σ = 1984902600. Its totient is φ = 595470744.

The previous prime is 1257104939. The next prime is 1257104971. The reversal of 1257104942 is 2494017521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16540817 + ... + 16540892.

It is an arithmetic number, because the mean of its divisors is an integer number (248112825).

Almost surely, 2^1257104942 is an apocalyptic number.

1257104942 is a deficient number, since it is larger than the sum of its proper divisors (727797658).

1257104942 is a wasteful number, since it uses less digits than its factorization.

1257104942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33081730.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1257104942 is about 35455.6757374613. The cubic root of 1257104942 is about 1079.2544414254.

The spelling of 1257104942 in words is "one billion, two hundred fifty-seven million, one hundred four thousand, nine hundred forty-two".