156047421 has 8 divisors (see below), whose sum is σ = 210993984. Its totient is φ = 102566240.

The previous prime is 156047413. The next prime is 156047431. The reversal of 156047421 is 124740651.

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

It is a cyclic number.

It is not a de Polignac number, because 156047421 - 2³ = 156047413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156047401) 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 7 ways as a sum of consecutive naturals, for example, 366096 + ... + 366521.

It is an arithmetic number, because the mean of its divisors is an integer number (26374248).

Almost surely, 2^156047421 is an apocalyptic number.

It is an amenable number.

156047421 is a deficient number, since it is larger than the sum of its proper divisors (54946563).

156047421 is an equidigital number, since it uses as much as digits as its factorization.

156047421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732691.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 156047421 is about 12491.8942118479. The cubic root of 156047421 is about 538.3758021197.

The spelling of 156047421 in words is "one hundred fifty-six million, forty-seven thousand, four hundred twenty-one".