1257190070 has 16 divisors (see below), whose sum is σ = 2324103408. Its totient is φ = 489284640.

The previous prime is 1257190037. The next prime is 1257190079. The reversal of 1257190070 is 700917521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257190079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1698536 + ... + 1699275.

It is an arithmetic number, because the mean of its divisors is an integer number (145256463).

Almost surely, 2^1257190070 is an apocalyptic number.

1257190070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1257190070 is a deficient number, since it is larger than the sum of its proper divisors (1066913338).

1257190070 is a wasteful number, since it uses less digits than its factorization.

1257190070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397855.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 1257190070 is about 35456.8762019442. The cubic root of 1257190070 is about 1079.2788023453.

The spelling of 1257190070 in words is "one billion, two hundred fifty-seven million, one hundred ninety thousand, seventy".