123028542 has 48 divisors (see below), whose sum is σ = 328080480. Its totient is φ = 32446656.

The previous prime is 123028537. The next prime is 123028561. The reversal of 123028542 is 245820321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35917 + ... + 39192.

It is an arithmetic number, because the mean of its divisors is an integer number (6835010).

Almost surely, 2^123028542 is an apocalyptic number.

123028542 is an abundant number, since it is smaller than the sum of its proper divisors (205051938).

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

123028542 is a wasteful number, since it uses less digits than its factorization.

123028542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75137 (or 75134 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 123028542 is about 11091.8232045052. The cubic root of 123028542 is about 497.3574477730.

Adding to 123028542 its reverse (245820321), we get a palindrome (368848863).

The spelling of 123028542 in words is "one hundred twenty-three million, twenty-eight thousand, five hundred forty-two".