126938211 has 32 divisors (see below), whose sum is σ = 180707328. Its totient is φ = 79134720.

The previous prime is 126938209. The next prime is 126938213. The reversal of 126938211 is 112839621.

126938211 is a nontrivial binomial coefficient, being equal to C(15934, 2).

It is an interprime number because it is at equal distance from previous prime (126938209) and next prime (126938213).

It is not a de Polignac number, because 126938211 - 2¹ = 126938209 is a prime.

It is a super-2 number, since 2×126938211² = 32226618823761042, which contains 22 as substring.

126938211 is a modest number, since divided by 38211 gives 1269 as remainder.

It is not an unprimeable number, because it can be changed into a prime (126938213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 493795 + ... + 494051.

It is an arithmetic number, because the mean of its divisors is an integer number (5647104).

Almost surely, 2^126938211 is an apocalyptic number.

126938211 is the 15933-rd triangular number and also the 7967-th hexagonal number.

126938211 is a deficient number, since it is larger than the sum of its proper divisors (53769117).

126938211 is a wasteful number, since it uses less digits than its factorization.

126938211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its digits is 5184, while the sum is 33.

The square root of 126938211 is about 11266.6858924885. The cubic root of 126938211 is about 502.5710381983.

The spelling of 126938211 in words is "one hundred twenty-six million, nine hundred thirty-eight thousand, two hundred eleven".