152121986 has 8 divisors (see below), whose sum is σ = 233038080. Its totient is φ = 74442628.

The previous prime is 152121979. The next prime is 152121989. The reversal of 152121986 is 689121251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (152121989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809066 + ... + 809253.

It is an arithmetic number, because the mean of its divisors is an integer number (29129760).

Almost surely, 2^152121986 is an apocalyptic number.

152121986 is a deficient number, since it is larger than the sum of its proper divisors (80916094).

152121986 is a wasteful number, since it uses less digits than its factorization.

152121986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618368.

The product of its digits is 8640, while the sum is 35.

The square root of 152121986 is about 12333.7741993276. The cubic root of 152121986 is about 533.8230580798.

The spelling of 152121986 in words is "one hundred fifty-two million, one hundred twenty-one thousand, nine hundred eighty-six".