146431020 has 24 divisors (see below), whose sum is σ = 410007024. Its totient is φ = 39048256.

The previous prime is 146431001. The next prime is 146431031. The reversal of 146431020 is 20134641.

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, 1220199 + ... + 1220318.

It is an arithmetic number, because the mean of its divisors is an integer number (17083626).

Almost surely, 2^146431020 is an apocalyptic number.

146431020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

146431020 is an abundant number, since it is smaller than the sum of its proper divisors (263576004).

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

146431020 is a wasteful number, since it uses less digits than its factorization.

146431020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440529 (or 2440527 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 146431020 is about 12100.8685638676. The cubic root of 146431020 is about 527.0814061216.

Adding to 146431020 its reverse (20134641), we get a palindrome (166565661).

The spelling of 146431020 in words is "one hundred forty-six million, four hundred thirty-one thousand, twenty".