1257342476 has 12 divisors (see below), whose sum is σ = 2369607072. Its totient is φ = 580311888.

The previous prime is 1257342469. The next prime is 1257342481. The reversal of 1257342476 is 6742437521.

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 3 ways as a sum of consecutive naturals, for example, 12089780 + ... + 12089883.

It is an arithmetic number, because the mean of its divisors is an integer number (197467256).

Almost surely, 2^1257342476 is an apocalyptic number.

It is an amenable number.

1257342476 is a deficient number, since it is larger than the sum of its proper divisors (1112264596).

1257342476 is a wasteful number, since it uses less digits than its factorization.

1257342476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24179680 (or 24179678 counting only the distinct ones).

The product of its digits is 282240, while the sum is 41.

The square root of 1257342476 is about 35459.0253109134. The cubic root of 1257342476 is about 1079.3224133374.

Adding to 1257342476 its reverse (6742437521), we get a palindrome (7999779997).

The spelling of 1257342476 in words is "one billion, two hundred fifty-seven million, three hundred forty-two thousand, four hundred seventy-six".