421185490 has 64 divisors (see below), whose sum is σ = 846028800. Its totient is φ = 149688000.

The previous prime is 421185487. The next prime is 421185509. The reversal of 421185490 is 94581124.

It is a happy number.

It is a super-3 number, since 3×421185490³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1554055 + ... + 1554325.

It is an arithmetic number, because the mean of its divisors is an integer number (13219200).

Almost surely, 2^421185490 is an apocalyptic number.

421185490 is an abundant number, since it is smaller than the sum of its proper divisors (424843310).

421185490 is a wasteful number, since it uses less digits than its factorization.

421185490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 421185490 is about 20522.8041456327. The cubic root of 421185490 is about 749.5911786755.

The spelling of 421185490 in words is "four hundred twenty-one million, one hundred eighty-five thousand, four hundred ninety".