401542 has 4 divisors (see below), whose sum is σ = 602316. Its totient is φ = 200770.

The previous prime is 401539. The next prime is 401551. The reversal of 401542 is 245104.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×401542² = 322471955528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100384 + ... + 100387.

It is an arithmetic number, because the mean of its divisors is an integer number (150579).

2⁴⁰¹⁵⁴² is an apocalyptic number.

401542 is a deficient number, since it is larger than the sum of its proper divisors (200774).

401542 is a wasteful number, since it uses less digits than its factorization.

401542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200773.

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

The square root of 401542 is about 633.6734174636. The cubic root of 401542 is about 73.7751881789.

Adding to 401542 its reverse (245104), we get a palindrome (646646).

It can be divided in two parts, 40154 and 2, that multiplied together give a palindrome (80308).

The spelling of 401542 in words is "four hundred one thousand, five hundred forty-two".