123739403 has 2 divisors, whose sum is σ = 123739404. Its totient is φ = 123739402.

The previous prime is 123739387. The next prime is 123739487. The reversal of 123739403 is 304937321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123739403 - 2⁴ = 123739387 is a prime.

It is a super-2 number, since 2×123739403² = 30622879709592818, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123739403.

It is not a weakly prime, because it can be changed into another prime (123739493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61869701 + 61869702.

It is an arithmetic number, because the mean of its divisors is an integer number (61869702).

Almost surely, 2^123739403 is an apocalyptic number.

123739403 is a deficient number, since it is larger than the sum of its proper divisors (1).

123739403 is an equidigital number, since it uses as much as digits as its factorization.

123739403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 123739403 is about 11123.8214207169. The cubic root of 123739403 is about 498.3135219794.

The spelling of 123739403 in words is "one hundred twenty-three million, seven hundred thirty-nine thousand, four hundred three".