156421462 has 4 divisors (see below), whose sum is σ = 234632196. Its totient is φ = 78210730.

The previous prime is 156421457. The next prime is 156421469. The reversal of 156421462 is 264124651.

It is a happy number.

156421462 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156421469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39105364 + ... + 39105367.

It is an arithmetic number, because the mean of its divisors is an integer number (58658049).

Almost surely, 2^156421462 is an apocalyptic number.

156421462 is a deficient number, since it is larger than the sum of its proper divisors (78210734).

156421462 is an equidigital number, since it uses as much as digits as its factorization.

156421462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78210733.

The product of its digits is 11520, while the sum is 31.

The square root of 156421462 is about 12506.8565994817. The cubic root of 156421462 is about 538.8056157830.

The spelling of 156421462 in words is "one hundred fifty-six million, four hundred twenty-one thousand, four hundred sixty-two".