420140324 has 24 divisors (see below), whose sum is σ = 743738688. Its totient is φ = 207658080.

The previous prime is 420140309. The next prime is 420140327. The reversal of 420140324 is 423041024.

It is a junction number, because it is equal to n+sod(n) for n = 420140296 and 420140305.

It is not an unprimeable number, because it can be changed into a prime (420140327) 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, 126809 + ... + 130079.

It is an arithmetic number, because the mean of its divisors is an integer number (30989112).

Almost surely, 2^420140324 is an apocalyptic number.

It is an amenable number.

420140324 is a deficient number, since it is larger than the sum of its proper divisors (323598364).

420140324 is a wasteful number, since it uses less digits than its factorization.

420140324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635 (or 3633 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 420140324 is about 20497.3248010564. The cubic root of 420140324 is about 748.9706316994.

Adding to 420140324 its reverse (423041024), we get a palindrome (843181348).

The spelling of 420140324 in words is "four hundred twenty million, one hundred forty thousand, three hundred twenty-four".