152121540 has 48 divisors (see below), whose sum is σ = 444463488. Its totient is φ = 38801664.

The previous prime is 152121533. The next prime is 152121569. The reversal of 152121540 is 45121251.

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, 53737 + ... + 56496.

It is an arithmetic number, because the mean of its divisors is an integer number (9259656).

Almost surely, 2^152121540 is an apocalyptic number.

152121540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

152121540 is an abundant number, since it is smaller than the sum of its proper divisors (292341948).

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

152121540 is a wasteful number, since it uses less digits than its factorization.

152121540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110268 (or 110266 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 152121540 is about 12333.7561188796. The cubic root of 152121540 is about 533.8225363816.

Adding to 152121540 its reverse (45121251), we get a palindrome (197242791).

The spelling of 152121540 in words is "one hundred fifty-two million, one hundred twenty-one thousand, five hundred forty".