421098490 has 16 divisors (see below), whose sum is σ = 790933248. Its totient is φ = 161115856.

The previous prime is 421098487. The next prime is 421098493. The reversal of 421098490 is 94890124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (421098487) and next prime (421098493).

It is not an unprimeable number, because it can be changed into a prime (421098493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915202 + ... + 915661.

It is an arithmetic number, because the mean of its divisors is an integer number (49433328).

Almost surely, 2^421098490 is an apocalyptic number.

421098490 is a deficient number, since it is larger than the sum of its proper divisors (369834758).

421098490 is a wasteful number, since it uses less digits than its factorization.

421098490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830893.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 421098490 is about 20520.6844427763. The cubic root of 421098490 is about 749.5395633145.

The spelling of 421098490 in words is "four hundred twenty-one million, ninety-eight thousand, four hundred ninety".