421261724 has 48 divisors (see below), whose sum is σ = 818952288. Its totient is φ = 188345088.

The previous prime is 421261723. The next prime is 421261739. The reversal of 421261724 is 427162124.

It is a super-2 number, since 2×421261724² = 354922880214904352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421261723) 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, 717359 + ... + 717945.

It is an arithmetic number, because the mean of its divisors is an integer number (17061506).

Almost surely, 2^421261724 is an apocalyptic number.

It is an amenable number.

421261724 is a deficient number, since it is larger than the sum of its proper divisors (397690564).

421261724 is a wasteful number, since it uses less digits than its factorization.

421261724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014 (or 1012 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 421261724 is about 20524.6613613964. The cubic root of 421261724 is about 749.6364009413.

The spelling of 421261724 in words is "four hundred twenty-one million, two hundred sixty-one thousand, seven hundred twenty-four".