157421306 has 8 divisors (see below), whose sum is σ = 269865120. Its totient is φ = 67466268.

The previous prime is 157421291. The next prime is 157421339. The reversal of 157421306 is 603124751.

157421306 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.

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, 5622176 + ... + 5622203.

It is an arithmetic number, because the mean of its divisors is an integer number (33733140).

Almost surely, 2^157421306 is an apocalyptic number.

157421306 is a deficient number, since it is larger than the sum of its proper divisors (112443814).

157421306 is a wasteful number, since it uses less digits than its factorization.

157421306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11244388.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 157421306 is about 12546.7647622804. The cubic root of 157421306 is about 539.9511912904.

The spelling of 157421306 in words is "one hundred fifty-seven million, four hundred twenty-one thousand, three hundred six".