401123720 has 16 divisors (see below), whose sum is σ = 902528460. Its totient is φ = 160449472.

The previous prime is 401123711. The next prime is 401123743. The reversal of 401123720 is 27321104.

401123720 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 390220516 + 10903204 = 19754^2 + 3302^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 401123692 and 401123701.

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, 5014007 + ... + 5014086.

Almost surely, 2^401123720 is an apocalyptic number.

401123720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401123720 is an abundant number, since it is smaller than the sum of its proper divisors (501404740).

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

401123720 is a wasteful number, since it uses less digits than its factorization.

401123720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10028104 (or 10028100 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 401123720 is about 20028.0732972495. The cubic root of 401123720 is about 737.4956246030.

Adding to 401123720 its reverse (27321104), we get a palindrome (428444824).

The spelling of 401123720 in words is "four hundred one million, one hundred twenty-three thousand, seven hundred twenty".