126909231 has 8 divisors (see below), whose sum is σ = 169276800. Its totient is φ = 84573912.

The previous prime is 126909221. The next prime is 126909253. The reversal of 126909231 is 132909621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126909231 - 2¹⁴ = 126892847 is a prime.

It is a super-2 number, since 2×126909231² = 32211905826022722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126909192 and 126909201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126909221) 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, 3486 + ... + 16308.

It is an arithmetic number, because the mean of its divisors is an integer number (21159600).

Almost surely, 2^126909231 is an apocalyptic number.

126909231 is a deficient number, since it is larger than the sum of its proper divisors (42367569).

126909231 is a wasteful number, since it uses less digits than its factorization.

126909231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16125.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 126909231 is about 11265.3997265965. The cubic root of 126909231 is about 502.5327896229.

The spelling of 126909231 in words is "one hundred twenty-six million, nine hundred nine thousand, two hundred thirty-one".