123136342 has 32 divisors (see below), whose sum is σ = 221068800. Its totient is φ = 50295168.

The previous prime is 123136339. The next prime is 123136357. The reversal of 123136342 is 243631321.

It is a super-2 number, since 2×123136342² = 30325117442281928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121534 + ... + 122542.

It is an arithmetic number, because the mean of its divisors is an integer number (6908400).

Almost surely, 2^123136342 is an apocalyptic number.

123136342 is a deficient number, since it is larger than the sum of its proper divisors (97932458).

123136342 is a wasteful number, since it uses less digits than its factorization.

123136342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420.

The product of its digits is 2592, while the sum is 25.

The square root of 123136342 is about 11096.6815760388. The cubic root of 123136342 is about 497.5026701203.

Adding to 123136342 its reverse (243631321), we get a palindrome (366767663).

It can be divided in two parts, 1231 and 36342, that added together give a palindrome (37573).

The spelling of 123136342 in words is "one hundred twenty-three million, one hundred thirty-six thousand, three hundred forty-two".