401142523 has 8 divisors (see below), whose sum is σ = 427554720. Its totient is φ = 375043200.

The previous prime is 401142503. The next prime is 401142551. The reversal of 401142523 is 325241104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401142523 - 2²¹ = 399045371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401142494 and 401142503.

It is not an unprimeable number, because it can be changed into a prime (401142503) 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, 75568 + ... + 80701.

It is an arithmetic number, because the mean of its divisors is an integer number (53444340).

Almost surely, 2^401142523 is an apocalyptic number.

401142523 is a deficient number, since it is larger than the sum of its proper divisors (26412197).

401142523 is a wasteful number, since it uses less digits than its factorization.

401142523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156437.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 401142523 is about 20028.5427078457. The cubic root of 401142523 is about 737.5071479916.

Adding to 401142523 its reverse (325241104), we get a palindrome (726383627).

The spelling of 401142523 in words is "four hundred one million, one hundred forty-two thousand, five hundred twenty-three".