84602421 has 64 divisors (see below), whose sum is σ = 142560000. Its totient is φ = 49268736.

The previous prime is 84602377. The next prime is 84602467. The reversal of 84602421 is 12420648.

It is not a de Polignac number, because 84602421 - 2⁷ = 84602293 is a prime.

It is a super-2 number, since 2×84602421² = 14315139278122482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84602471) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 776115 + ... + 776223.

It is an arithmetic number, because the mean of its divisors is an integer number (2227500).

Almost surely, 2^84602421 is an apocalyptic number.

It is an amenable number.

84602421 is a deficient number, since it is larger than the sum of its proper divisors (57957579).

84602421 is a wasteful number, since it uses less digits than its factorization.

84602421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 84602421 is about 9197.9574363007. The cubic root of 84602421 is about 438.9963712355.

The spelling of 84602421 in words is "eighty-four million, six hundred two thousand, four hundred twenty-one".