421053140 has 48 divisors (see below), whose sum is σ = 895482000. Its totient is φ = 166290432.

The previous prime is 421053137. The next prime is 421053169. The reversal of 421053140 is 41350124.

It can be written as a sum of positive squares in 8 ways, for example, as 45778756 + 375274384 = 6766^2 + 19372^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 682112 + ... + 682728.

It is an arithmetic number, because the mean of its divisors is an integer number (18655875).

Almost surely, 2^421053140 is an apocalyptic number.

It is an amenable number.

421053140 is an abundant number, since it is smaller than the sum of its proper divisors (474428860).

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

421053140 is a wasteful number, since it uses less digits than its factorization.

421053140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 421053140 is about 20519.5794303879. The cubic root of 421053140 is about 749.5126552472.

The spelling of 421053140 in words is "four hundred twenty-one million, fifty-three thousand, one hundred forty".