1257131046 has 16 divisors (see below), whose sum is σ = 2515364208. Its totient is φ = 418860000.

The previous prime is 1257131039. The next prime is 1257131059. The reversal of 1257131046 is 6401317521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30705 + ... + 58796.

It is an arithmetic number, because the mean of its divisors is an integer number (157210263).

Almost surely, 2^1257131046 is an apocalyptic number.

1257131046 is an abundant number, since it is smaller than the sum of its proper divisors (1258233162).

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

1257131046 is a wasteful number, since it uses less digits than its factorization.

1257131046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91847.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1257131046 is about 35456.0438571480. The cubic root of 1257131046 is about 1079.2619116750.

Adding to 1257131046 its reverse (6401317521), we get a palindrome (7658448567).

The spelling of 1257131046 in words is "one billion, two hundred fifty-seven million, one hundred thirty-one thousand, forty-six".