401497142 has 4 divisors (see below), whose sum is σ = 602245716. Its totient is φ = 200748570.

The previous prime is 401497111. The next prime is 401497169. The reversal of 401497142 is 241794104.

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

It is a super-2 number, since 2×401497142² = 322399910068336328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401497099 and 401497108.

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, 100374284 + ... + 100374287.

It is an arithmetic number, because the mean of its divisors is an integer number (150561429).

Almost surely, 2^401497142 is an apocalyptic number.

401497142 is a deficient number, since it is larger than the sum of its proper divisors (200748574).

401497142 is a wasteful number, since it uses less digits than its factorization.

401497142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200748573.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 401497142 is about 20037.3935929801. The cubic root of 401497142 is about 737.7244082776.

The spelling of 401497142 in words is "four hundred one million, four hundred ninety-seven thousand, one hundred forty-two".