123740432 has 20 divisors (see below), whose sum is σ = 246227916. Its totient is φ = 60197760.

The previous prime is 123740431. The next prime is 123740443. The reversal of 123740432 is 234047321.

It can be written as a sum of positive squares in 2 ways, for example, as 68624656 + 55115776 = 8284^2 + 7424^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (123740431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103919 + ... + 105102.

Almost surely, 2^123740432 is an apocalyptic number.

It is an amenable number.

123740432 is a deficient number, since it is larger than the sum of its proper divisors (122487484).

123740432 is a wasteful number, since it uses less digits than its factorization.

123740432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209066 (or 209060 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 123740432 is about 11123.8676727117. The cubic root of 123740432 is about 498.3149032780.

Adding to 123740432 its reverse (234047321), we get a palindrome (357787753).

The spelling of 123740432 in words is "one hundred twenty-three million, seven hundred forty thousand, four hundred thirty-two".