156820542 has 8 divisors (see below), whose sum is σ = 313641096. Its totient is φ = 52273512.

The previous prime is 156820523. The next prime is 156820553. The reversal of 156820542 is 245028651.

156820542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

156820542 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13068373 + ... + 13068384.

It is an arithmetic number, because the mean of its divisors is an integer number (39205137).

Almost surely, 2^156820542 is an apocalyptic number.

156820542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

156820542 is a wasteful number, since it uses less digits than its factorization.

156820542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26136762.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 156820542 is about 12522.8008847861. The cubic root of 156820542 is about 539.2634471115.

The spelling of 156820542 in words is "one hundred fifty-six million, eight hundred twenty thousand, five hundred forty-two".