126981774 has 12 divisors (see below), whose sum is σ = 275127216. Its totient is φ = 42327252.

The previous prime is 126981739. The next prime is 126981779. The reversal of 126981774 is 477189621.

It is a happy number.

It is a super-2 number, since 2×126981774² = 32248741856374152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126981779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3527254 + ... + 3527289.

It is an arithmetic number, because the mean of its divisors is an integer number (22927268).

Almost surely, 2^126981774 is an apocalyptic number.

126981774 is an abundant number, since it is smaller than the sum of its proper divisors (148145442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126981774 is a wasteful number, since it uses less digits than its factorization.

126981774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7054551 (or 7054548 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 126981774 is about 11268.6189925829. The cubic root of 126981774 is about 502.6285228541.

The spelling of 126981774 in words is "one hundred twenty-six million, nine hundred eighty-one thousand, seven hundred seventy-four".