126699552 has 120 divisors (see below), whose sum is σ = 425912256. Its totient is φ = 36194688.

The previous prime is 126699541. The next prime is 126699569. The reversal of 126699552 is 255996621.

It is a happy number.

126699552 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 99 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 126699498 and 126699507.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14653 + ... + 21635.

Almost surely, 2^126699552 is an apocalyptic number.

126699552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126699552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212956128).

126699552 is an abundant number, since it is smaller than the sum of its proper divisors (299212704).

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

126699552 is an equidigital number, since it uses as much as digits as its factorization.

126699552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7012 (or 6995 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 126699552 is about 11256.0895518826. The cubic root of 126699552 is about 502.2558760728.

The spelling of 126699552 in words is "one hundred twenty-six million, six hundred ninety-nine thousand, five hundred fifty-two".