121504542 has 16 divisors (see below), whose sum is σ = 257303952. Its totient is φ = 38119040.

The previous prime is 121504489. The next prime is 121504543. The reversal of 121504542 is 245405121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121504543) 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, 595509 + ... + 595712.

It is an arithmetic number, because the mean of its divisors is an integer number (16081497).

Almost surely, 2^121504542 is an apocalyptic number.

121504542 is an abundant number, since it is smaller than the sum of its proper divisors (135799410).

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

121504542 is a wasteful number, since it uses less digits than its factorization.

121504542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191243.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 121504542 is about 11022.9098699028. The cubic root of 121504542 is about 495.2952590077.

Adding to 121504542 its reverse (245405121), we get a palindrome (366909663).

The spelling of 121504542 in words is "one hundred twenty-one million, five hundred four thousand, five hundred forty-two".