421617492 has 36 divisors (see below), whose sum is σ = 1068858336. Its totient is φ = 140130000.

The previous prime is 421617463. The next prime is 421617503. The reversal of 421617492 is 294716124.

It is a happy number.

421617492 is a `hidden beast` number, since 4 + 2 + 161 + 7 + 492 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×421617492² = 355522619120740128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4384 + ... + 29367.

Almost surely, 2^421617492 is an apocalyptic number.

It is an amenable number.

421617492 is an abundant number, since it is smaller than the sum of its proper divisors (647240844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421617492 is a wasteful number, since it uses less digits than its factorization.

421617492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34108 (or 34103 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 421617492 is about 20533.3263744577. The cubic root of 421617492 is about 749.8473716082.

The spelling of 421617492 in words is "four hundred twenty-one million, six hundred seventeen thousand, four hundred ninety-two".