1257141486 has 16 divisors (see below), whose sum is σ = 2517750144. Its totient is φ = 418469304.

The previous prime is 1257141463. The next prime is 1257141493. The reversal of 1257141486 is 6841417521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139740 + ... + 148463.

It is an arithmetic number, because the mean of its divisors is an integer number (157359384).

Almost surely, 2^1257141486 is an apocalyptic number.

1257141486 is an abundant number, since it is smaller than the sum of its proper divisors (1260608658).

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

1257141486 is a wasteful number, since it uses less digits than its factorization.

1257141486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288935.

The product of its digits is 53760, while the sum is 39.

The square root of 1257141486 is about 35456.1910813894. The cubic root of 1257141486 is about 1079.2648992880.

The spelling of 1257141486 in words is "one billion, two hundred fifty-seven million, one hundred forty-one thousand, four hundred eighty-six".