152121402 has 96 divisors (see below), whose sum is σ = 369008640. Its totient is φ = 46830960.

The previous prime is 152121397. The next prime is 152121407. The reversal of 152121402 is 204121251.

152121402 is a `hidden beast` number, since 1 + 521 + 2 + 140 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (152121397) and next prime (152121407).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (152121407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 346299 + ... + 346737.

It is an arithmetic number, because the mean of its divisors is an integer number (3843840).

Almost surely, 2^152121402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 152121402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184504320).

152121402 is an abundant number, since it is smaller than the sum of its proper divisors (216887238).

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

152121402 is a wasteful number, since it uses less digits than its factorization.

152121402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 152121402 is about 12333.7505244755. The cubic root of 152121402 is about 533.8223749590.

Adding to 152121402 its reverse (204121251), we get a palindrome (356242653).

The spelling of 152121402 in words is "one hundred fifty-two million, one hundred twenty-one thousand, four hundred two".