16121542 has 8 divisors (see below), whose sum is σ = 25604856. Its totient is φ = 7586592.

The previous prime is 16121537. The next prime is 16121561. The reversal of 16121542 is 24512161.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237048 + ... + 237115.

It is an arithmetic number, because the mean of its divisors is an integer number (3200607).

Almost surely, 2^16121542 is an apocalyptic number.

16121542 is a deficient number, since it is larger than the sum of its proper divisors (9483314).

16121542 is a wasteful number, since it uses less digits than its factorization.

16121542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474182.

The product of its digits is 480, while the sum is 22.

The square root of 16121542 is about 4015.1640066129. The cubic root of 16121542 is about 252.6206566443.

The spelling of 16121542 in words is "sixteen million, one hundred twenty-one thousand, five hundred forty-two".