126951956 has 6 divisors (see below), whose sum is σ = 222165930. Its totient is φ = 63475976.

The previous prime is 126951931. The next prime is 126951959. The reversal of 126951956 is 659159621.

It can be written as a sum of positive squares in only one way, i.e., 126112900 + 839056 = 11230^2 + 916^2 .

It is a super-2 number, since 2×126951956² = 32233598264451872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126951959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15868991 + ... + 15868998.

It is an arithmetic number, because the mean of its divisors is an integer number (37027655).

Almost surely, 2^126951956 is an apocalyptic number.

It is an amenable number.

126951956 is a deficient number, since it is larger than the sum of its proper divisors (95213974).

126951956 is a wasteful number, since it uses less digits than its factorization.

126951956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31737993 (or 31737991 counting only the distinct ones).

The product of its digits is 145800, while the sum is 44.

The square root of 126951956 is about 11267.2958601432. The cubic root of 126951956 is about 502.5891771798.

The spelling of 126951956 in words is "one hundred twenty-six million, nine hundred fifty-one thousand, nine hundred fifty-six".