126620836 has 12 divisors (see below), whose sum is σ = 224622412. Its totient is φ = 62443008.

The previous prime is 126620803. The next prime is 126620839. The reversal of 126620836 is 638026621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28729600 + 97891236 = 5360^2 + 9894^2 .

It is a super-3 number, since 3×126620836³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (126620839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216525 + ... + 217108.

Almost surely, 2^126620836 is an apocalyptic number.

It is an amenable number.

126620836 is a deficient number, since it is larger than the sum of its proper divisors (98001576).

126620836 is a wasteful number, since it uses less digits than its factorization.

126620836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433710 (or 433708 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 126620836 is about 11252.5924124177. The cubic root of 126620836 is about 502.1518405460.

The spelling of 126620836 in words is "one hundred twenty-six million, six hundred twenty thousand, eight hundred thirty-six".