123726490 has 16 divisors (see below), whose sum is σ = 222842952. Its totient is φ = 49460544.

The previous prime is 123726469. The next prime is 123726503. The reversal of 123726490 is 94627321.

It can be written as a sum of positive squares in 4 ways, for example, as 122080401 + 1646089 = 11049^2 + 1283^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21832 + ... + 26908.

Almost surely, 2^123726490 is an apocalyptic number.

123726490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123726490 is a deficient number, since it is larger than the sum of its proper divisors (99116462).

123726490 is a wasteful number, since it uses less digits than its factorization.

123726490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 123726490 is about 11123.2409845332. The cubic root of 123726490 is about 498.2961873061.

The spelling of 123726490 in words is "one hundred twenty-three million, seven hundred twenty-six thousand, four hundred ninety".