421450450 has 48 divisors (see below), whose sum is σ = 800026920. Its totient is φ = 165150720.

The previous prime is 421450411. The next prime is 421450481. The reversal of 421450450 is 54054124.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 10131489 + 411318961 = 3183^2 + 20281^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 547666 + ... + 548434.

Almost surely, 2^421450450 is an apocalyptic number.

421450450 is a deficient number, since it is larger than the sum of its proper divisors (378576470).

421450450 is a wasteful number, since it uses less digits than its factorization.

421450450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 421450450 is about 20529.2583889433. The cubic root of 421450450 is about 749.7483303741.

The spelling of 421450450 in words is "four hundred twenty-one million, four hundred fifty thousand, four hundred fifty".