126891070 has 16 divisors (see below), whose sum is σ = 233264448. Its totient is φ = 49676320.

The previous prime is 126891067. The next prime is 126891071. The reversal of 126891070 is 70198621.

It is a happy number.

It is a super-2 number, since 2×126891070² = 32202687291489800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126891071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 134521 + ... + 135460.

It is an arithmetic number, because the mean of its divisors is an integer number (14579028).

Almost surely, 2^126891070 is an apocalyptic number.

126891070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126891070 is a deficient number, since it is larger than the sum of its proper divisors (106373378).

126891070 is a wasteful number, since it uses less digits than its factorization.

126891070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270035.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 126891070 is about 11264.5936455782. The cubic root of 126891070 is about 502.5088172838.

The spelling of 126891070 in words is "one hundred twenty-six million, eight hundred ninety-one thousand, seventy".