16001542 has 4 divisors (see below), whose sum is σ = 24002316. Its totient is φ = 8000770.

The previous prime is 16001497. The next prime is 16001551. The reversal of 16001542 is 24510061.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4000384 + ... + 4000387.

It is an arithmetic number, because the mean of its divisors is an integer number (6000579).

Almost surely, 2^16001542 is an apocalyptic number.

16001542 is a deficient number, since it is larger than the sum of its proper divisors (8000774).

16001542 is an equidigital number, since it uses as much as digits as its factorization.

16001542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000773.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 16001542 is about 4000.1927453562. The cubic root of 16001542 is about 251.9923047117.

The spelling of 16001542 in words is "sixteen million, one thousand, five hundred forty-two".