402043142 has 8 divisors (see below), whose sum is σ = 603370632. Its totient is φ = 200919600.

The previous prime is 402043141. The next prime is 402043181. The reversal of 402043142 is 241340204.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402043141) 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, 45959 + ... + 54002.

It is an arithmetic number, because the mean of its divisors is an integer number (75421329).

Almost surely, 2^402043142 is an apocalyptic number.

402043142 is a deficient number, since it is larger than the sum of its proper divisors (201327490).

402043142 is a wasteful number, since it uses less digits than its factorization.

402043142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101974.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 402043142 is about 20051.0134905944. The cubic root of 402043142 is about 738.0586697481.

Adding to 402043142 its reverse (241340204), we get a palindrome (643383346).

The spelling of 402043142 in words is "four hundred two million, forty-three thousand, one hundred forty-two".