405030140 has 12 divisors (see below), whose sum is σ = 850563336. Its totient is φ = 162012048.

The previous prime is 405030139. The next prime is 405030167. The reversal of 405030140 is 41030504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10125734 + ... + 10125773.

It is an arithmetic number, because the mean of its divisors is an integer number (70880278).

Almost surely, 2^405030140 is an apocalyptic number.

It is an amenable number.

405030140 is an abundant number, since it is smaller than the sum of its proper divisors (445533196).

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

405030140 is a wasteful number, since it uses less digits than its factorization.

405030140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20251516 (or 20251514 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 405030140 is about 20125.3606178871. The cubic root of 405030140 is about 739.8819753332.

Adding to 405030140 its reverse (41030504), we get a palindrome (446060644).

The spelling of 405030140 in words is "four hundred five million, thirty thousand, one hundred forty".