405220120 has 32 divisors (see below), whose sum is σ = 912416400. Its totient is φ = 161968768.

The previous prime is 405220099. The next prime is 405220157. The reversal of 405220120 is 21022504.

It is a junction number, because it is equal to n+sod(n) for n = 405220094 and 405220103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68646 + ... + 74314.

Almost surely, 2^405220120 is an apocalyptic number.

405220120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405220120 is an abundant number, since it is smaller than the sum of its proper divisors (507196280).

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

405220120 is a wasteful number, since it uses less digits than its factorization.

405220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7467 (or 7463 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 405220120 is about 20130.0799799703. The cubic root of 405220120 is about 739.9976381712.

Adding to 405220120 its reverse (21022504), we get a palindrome (426242624).

The spelling of 405220120 in words is "four hundred five million, two hundred twenty thousand, one hundred twenty".