421140372 has 24 divisors (see below), whose sum is σ = 990165792. Its totient is φ = 139308000.

The previous prime is 421140353. The next prime is 421140383. The reversal of 421140372 is 273041124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132379 + ... + 135522.

It is an arithmetic number, because the mean of its divisors is an integer number (41256908).

Almost surely, 2^421140372 is an apocalyptic number.

It is an amenable number.

421140372 is an abundant number, since it is smaller than the sum of its proper divisors (569025420).

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

421140372 is a wasteful number, since it uses less digits than its factorization.

421140372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268039 (or 268037 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 421140372 is about 20521.7048999346. The cubic root of 421140372 is about 749.5644119553.

Adding to 421140372 its reverse (273041124), we get a palindrome (694181496).

The spelling of 421140372 in words is "four hundred twenty-one million, one hundred forty thousand, three hundred seventy-two".