126939377 has 2 divisors, whose sum is σ = 126939378. Its totient is φ = 126939376.

The previous prime is 126939349. The next prime is 126939383. The reversal of 126939377 is 773939621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112869376 + 14070001 = 10624^2 + 3751^2 .

It is a cyclic number.

It is not a de Polignac number, because 126939377 - 2⁶ = 126939313 is a prime.

It is a super-2 number, since 2×126939377² = 32227210866296258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126939877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63469688 + 63469689.

It is an arithmetic number, because the mean of its divisors is an integer number (63469689).

Almost surely, 2^126939377 is an apocalyptic number.

It is an amenable number.

126939377 is a deficient number, since it is larger than the sum of its proper divisors (1).

126939377 is an equidigital number, since it uses as much as digits as its factorization.

126939377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 47.

The square root of 126939377 is about 11266.7376378435. The cubic root of 126939377 is about 502.5725769943.

The spelling of 126939377 in words is "one hundred twenty-six million, nine hundred thirty-nine thousand, three hundred seventy-seven".