400141020 has 24 divisors (see below), whose sum is σ = 1120395024. Its totient is φ = 106704256.

The previous prime is 400140991. The next prime is 400141031. The reversal of 400141020 is 20141004.

It is a super-2 number, since 2×400141020² = 320225671773280800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 400140987 and 400141005.

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, 3334449 + ... + 3334568.

It is an arithmetic number, because the mean of its divisors is an integer number (46683126).

Almost surely, 2^400141020 is an apocalyptic number.

It is an amenable number.

400141020 is an abundant number, since it is smaller than the sum of its proper divisors (720254004).

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

400141020 is a wasteful number, since it uses less digits than its factorization.

400141020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669029 (or 6669027 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 400141020 is about 20003.5251893260. The cubic root of 400141020 is about 736.8928765750.

Adding to 400141020 its reverse (20141004), we get a palindrome (420282024).

The spelling of 400141020 in words is "four hundred million, one hundred forty-one thousand, twenty".