427022421 has 32 divisors (see below), whose sum is σ = 673575168. Its totient is φ = 235560960.

The previous prime is 427022417. The next prime is 427022441. The reversal of 427022421 is 124220724.

It is not a de Polignac number, because 427022421 - 2² = 427022417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 427022391 and 427022400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427022441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80961 + ... + 86073.

It is an arithmetic number, because the mean of its divisors is an integer number (21049224).

Almost surely, 2^427022421 is an apocalyptic number.

427022421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

427022421 is the 11931-st octagonal number.

It is an amenable number.

427022421 is a deficient number, since it is larger than the sum of its proper divisors (246552747).

427022421 is a wasteful number, since it uses less digits than its factorization.

427022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 427022421 is about 20664.5208267697. The cubic root of 427022421 is about 753.0380010063.

The spelling of 427022421 in words is "four hundred twenty-seven million, twenty-two thousand, four hundred twenty-one".