126390506 has 8 divisors (see below), whose sum is σ = 206820864. Its totient is φ = 57450220.

The previous prime is 126390493. The next prime is 126390553. The reversal of 126390506 is 605093621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2872490 + ... + 2872533.

It is an arithmetic number, because the mean of its divisors is an integer number (25852608).

Almost surely, 2^126390506 is an apocalyptic number.

126390506 is a deficient number, since it is larger than the sum of its proper divisors (80430358).

126390506 is a wasteful number, since it uses less digits than its factorization.

126390506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5745036.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 126390506 is about 11242.3532234137. The cubic root of 126390506 is about 501.8471754819.

The spelling of 126390506 in words is "one hundred twenty-six million, three hundred ninety thousand, five hundred six".