421910137 has 8 divisors (see below), whose sum is σ = 480277440. Its totient is φ = 366878160.

The previous prime is 421910113. The next prime is 421910141. The reversal of 421910137 is 731019124.

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

It is a de Polignac number, because none of the positive numbers 2^k-421910137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421910147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833562 + ... + 834067.

It is an arithmetic number, because the mean of its divisors is an integer number (60034680).

Almost surely, 2^421910137 is an apocalyptic number.

It is an amenable number.

421910137 is a deficient number, since it is larger than the sum of its proper divisors (58367303).

421910137 is a wasteful number, since it uses less digits than its factorization.

421910137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667663.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 421910137 is about 20540.4512365235. The cubic root of 421910137 is about 750.0208213479.

The spelling of 421910137 in words is "four hundred twenty-one million, nine hundred ten thousand, one hundred thirty-seven".