126993490 has 32 divisors (see below), whose sum is σ = 247037616. Its totient is φ = 46725120.

The previous prime is 126993487. The next prime is 126993499. The reversal of 126993490 is 94399621.

It can be written as a sum of positive squares in 8 ways, for example, as 5707321 + 121286169 = 2389^2 + 11013^2 .

It is a super-2 number, since 2×126993490² = 32254693004760200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126993499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39130 + ... + 42250.

Almost surely, 2^126993490 is an apocalyptic number.

126993490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126993490 is a deficient number, since it is larger than the sum of its proper divisors (120044126).

126993490 is a wasteful number, since it uses less digits than its factorization.

126993490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 126993490 is about 11269.1388313393. The cubic root of 126993490 is about 502.6439807541.

The spelling of 126993490 in words is "one hundred twenty-six million, nine hundred ninety-three thousand, four hundred ninety".