126951261 has 4 divisors (see below), whose sum is σ = 169268352. Its totient is φ = 84634172.

The previous prime is 126951247. The next prime is 126951263. The reversal of 126951261 is 162159621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126951261 - 2⁶ = 126951197 is a prime.

It is a super-2 number, since 2×126951261² = 32233245338980242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126951263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21158541 + ... + 21158546.

It is an arithmetic number, because the mean of its divisors is an integer number (42317088).

Almost surely, 2^126951261 is an apocalyptic number.

It is an amenable number.

126951261 is a deficient number, since it is larger than the sum of its proper divisors (42317091).

126951261 is an equidigital number, since it uses as much as digits as its factorization.

126951261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42317090.

The product of its digits is 6480, while the sum is 33.

The square root of 126951261 is about 11267.2650186281. The cubic root of 126951261 is about 502.5882600347.

The spelling of 126951261 in words is "one hundred twenty-six million, nine hundred fifty-one thousand, two hundred sixty-one".