15942061 has 4 divisors (see below), whose sum is σ = 15965824. Its totient is φ = 15918300.

The previous prime is 15942053. The next prime is 15942077. The reversal of 15942061 is 16024951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16024951 = 23 ⋅696737.

It is a cyclic number.

It is not a de Polignac number, because 15942061 - 2³ = 15942053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15942001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10845 + ... + 12226.

It is an arithmetic number, because the mean of its divisors is an integer number (3991456).

Almost surely, 2^15942061 is an apocalyptic number.

It is an amenable number.

15942061 is a deficient number, since it is larger than the sum of its proper divisors (23763).

15942061 is an equidigital number, since it uses as much as digits as its factorization.

15942061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23762.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 15942061 is about 3992.7510566025. The cubic root of 15942061 is about 251.6796814072.

It can be divided in two parts, 1594 and 2061, that added together give a triangular number (3655 = T₈₅).

The spelling of 15942061 in words is "fifteen million, nine hundred forty-two thousand, sixty-one".