421262121 has 16 divisors (see below), whose sum is σ = 642386304. Its totient is φ = 240547584.

The previous prime is 421262119. The next prime is 421262123. The reversal of 421262121 is 121262124.

It is an interprime number because it is at equal distance from previous prime (421262119) and next prime (421262123).

It is not a de Polignac number, because 421262121 - 2¹ = 421262119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (421262123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26155 + ... + 39071.

It is an arithmetic number, because the mean of its divisors is an integer number (40149144).

Almost surely, 2^421262121 is an apocalyptic number.

It is an amenable number.

421262121 is a deficient number, since it is larger than the sum of its proper divisors (221124183).

421262121 is a wasteful number, since it uses less digits than its factorization.

421262121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14480.

The product of its digits is 384, while the sum is 21.

The square root of 421262121 is about 20524.6710326865. The cubic root of 421262121 is about 749.6366364288.

The spelling of 421262121 in words is "four hundred twenty-one million, two hundred sixty-two thousand, one hundred twenty-one".