421919554 has 16 divisors (see below), whose sum is σ = 735149376. Its totient is φ = 177858000.

The previous prime is 421919503. The next prime is 421919557. The reversal of 421919554 is 455919124.

It is a super-2 number, since 2×421919554² = 356032220095117832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421919557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246172 + ... + 247879.

It is an arithmetic number, because the mean of its divisors is an integer number (45946836).

Almost surely, 2^421919554 is an apocalyptic number.

421919554 is a deficient number, since it is larger than the sum of its proper divisors (313229822).

421919554 is a wasteful number, since it uses less digits than its factorization.

421919554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494121.

The product of its digits is 64800, while the sum is 40.

The square root of 421919554 is about 20540.6804658463. The cubic root of 421919554 is about 750.0264014410.

The spelling of 421919554 in words is "four hundred twenty-one million, nine hundred nineteen thousand, five hundred fifty-four".