421150901 has 4 divisors (see below), whose sum is σ = 430945152. Its totient is φ = 411356652.

The previous prime is 421150883. The next prime is 421150931. The reversal of 421150901 is 109051124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421150901 - 2¹⁴ = 421134517 is a prime.

It is a super-2 number, since 2×421150901² = 354736162826223602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421150931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4897061 + ... + 4897146.

It is an arithmetic number, because the mean of its divisors is an integer number (107736288).

Almost surely, 2^421150901 is an apocalyptic number.

It is an amenable number.

421150901 is a deficient number, since it is larger than the sum of its proper divisors (9794251).

421150901 is an equidigital number, since it uses as much as digits as its factorization.

421150901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9794250.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 421150901 is about 20521.9614315981. The cubic root of 421150901 is about 749.5706585644.

The spelling of 421150901 in words is "four hundred twenty-one million, one hundred fifty thousand, nine hundred one".