123253542 has 16 divisors (see below), whose sum is σ = 273896880. Its totient is φ = 41084496.

The previous prime is 123253541. The next prime is 123253561. The reversal of 123253542 is 245352321.

It is a happy number.

123253542 is a `hidden beast` number, since 123 + 2 + 535 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123253541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141183 + ... + 1141290.

It is an arithmetic number, because the mean of its divisors is an integer number (17118555).

Almost surely, 2^123253542 is an apocalyptic number.

123253542 is an abundant number, since it is smaller than the sum of its proper divisors (150643338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123253542 is a wasteful number, since it uses less digits than its factorization.

123253542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282484 (or 2282478 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 123253542 is about 11101.9611780982. The cubic root of 123253542 is about 497.6604595077.

The spelling of 123253542 in words is "one hundred twenty-three million, two hundred fifty-three thousand, five hundred forty-two".