421123040 has 96 divisors (see below), whose sum is σ = 1076646816. Its totient is φ = 154736640.

The previous prime is 421122979. The next prime is 421123091. The reversal of 421123040 is 40321124.

It is a super-2 number, since 2×421123040² = 354689229637683200, which contains 22 as substring.

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, 609095 + ... + 609785.

It is an arithmetic number, because the mean of its divisors is an integer number (11215071).

Almost surely, 2^421123040 is an apocalyptic number.

421123040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421123040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538323408).

421123040 is an abundant number, since it is smaller than the sum of its proper divisors (655523776).

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

421123040 is a wasteful number, since it uses less digits than its factorization.

421123040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421123040 is about 20521.2826109871. The cubic root of 421123040 is about 749.5541290587.

Adding to 421123040 its reverse (40321124), we get a palindrome (461444164).

The spelling of 421123040 in words is "four hundred twenty-one million, one hundred twenty-three thousand, forty".