1257475379234 has 8 divisors (see below), whose sum is σ = 1886396708460. Its totient is φ = 628676476416.

The previous prime is 1257475379231. The next prime is 1257475379249. The reversal of 1257475379234 is 4329735747521.

It can be written as a sum of positive squares in 2 ways, for example, as 1187003713009 + 70471666225 = 1089497^2 + 265465^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1257475379231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30580919 + ... + 30622010.

Almost surely, 2^{1257475379234} is an apocalyptic number.

1257475379234 is a deficient number, since it is larger than the sum of its proper divisors (628921329226).

1257475379234 is a wasteful number, since it uses less digits than its factorization.

1257475379234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61213204.

The product of its digits is 44452800, while the sum is 59.

The spelling of 1257475379234 in words is "one trillion, two hundred fifty-seven billion, four hundred seventy-five million, three hundred seventy-nine thousand, two hundred thirty-four".