10157421 has 8 divisors (see below), whose sum is σ = 14132160. Its totient is φ = 6477152.

The previous prime is 10157393. The next prime is 10157423. The reversal of 10157421 is 12475101.

It is a happy number.

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 10157421 - 2¹⁴ = 10141037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10157423) 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, 73536 + ... + 73673.

It is an arithmetic number, because the mean of its divisors is an integer number (1766520).

Almost surely, 2^10157421 is an apocalyptic number.

It is an amenable number.

10157421 is a deficient number, since it is larger than the sum of its proper divisors (3974739).

10157421 is a wasteful number, since it uses less digits than its factorization.

10157421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147235.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 10157421 is about 3187.0709122955. The cubic root of 10157421 is about 216.5680990184.

The spelling of 10157421 in words is "ten million, one hundred fifty-seven thousand, four hundred twenty-one".