123421552 has 10 divisors (see below), whose sum is σ = 239129288. Its totient is φ = 61710768.

The previous prime is 123421541. The next prime is 123421553. The reversal of 123421552 is 255124321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123421553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3856908 + ... + 3856939.

Almost surely, 2^123421552 is an apocalyptic number.

It is an amenable number.

123421552 is a deficient number, since it is larger than the sum of its proper divisors (115707736).

123421552 is an equidigital number, since it uses as much as digits as its factorization.

123421552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7713855 (or 7713849 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 123421552 is about 11109.5252823872. The cubic root of 123421552 is about 497.8864813324.

Adding to 123421552 its reverse (255124321), we get a palindrome (378545873).

The spelling of 123421552 in words is "one hundred twenty-three million, four hundred twenty-one thousand, five hundred fifty-two".