401244142 has 8 divisors (see below), whose sum is σ = 648163656. Its totient is φ = 185189592.

The previous prime is 401244139. The next prime is 401244143. The reversal of 401244142 is 241442104.

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

It is a super-2 number, since 2×401244142² = 321993722978632328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401244143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7716208 + ... + 7716259.

It is an arithmetic number, because the mean of its divisors is an integer number (81020457).

Almost surely, 2^401244142 is an apocalyptic number.

401244142 is a deficient number, since it is larger than the sum of its proper divisors (246919514).

401244142 is a wasteful number, since it uses less digits than its factorization.

401244142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15432482.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 401244142 is about 20031.0794017696. The cubic root of 401244142 is about 737.5694188031.

Adding to 401244142 its reverse (241442104), we get a palindrome (642686246).

The spelling of 401244142 in words is "four hundred one million, two hundred forty-four thousand, one hundred forty-two".