126939357 has 24 divisors (see below), whose sum is σ = 194720760. Its totient is φ = 79411200.

The previous prime is 126939349. The next prime is 126939377. The reversal of 126939357 is 753939621.

126939357 is a `hidden beast` number, since 1 + 269 + 39 + 357 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 51926436 + 75012921 = 7206^2 + 8661^2 .

It is not a de Polignac number, because 126939357 - 2³ = 126939349 is a prime.

It is a super-2 number, since 2×126939357² = 32227200711146898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126939377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60319 + ... + 62387.

It is an arithmetic number, because the mean of its divisors is an integer number (8113365).

Almost surely, 2^126939357 is an apocalyptic number.

126939357 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

126939357 is a deficient number, since it is larger than the sum of its proper divisors (67781403).

126939357 is a wasteful number, since it uses less digits than its factorization.

126939357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493 (or 2490 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 126939357 is about 11266.7367502751. The cubic root of 126939357 is about 502.5725505999.

The spelling of 126939357 in words is "one hundred twenty-six million, nine hundred thirty-nine thousand, three hundred fifty-seven".