402424013042 has 4 divisors (see below), whose sum is σ = 603636019566. Its totient is φ = 201212006520.

The previous prime is 402424013041. The next prime is 402424013053. The reversal of 402424013042 is 240310424204.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 221406950521 + 181017062521 = 470539^2 + 425461^2 .

It is not an unprimeable number, because it can be changed into a prime (402424013041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606003259 + ... + 100606003262.

Almost surely, 2^402424013042 is an apocalyptic number.

402424013042 is a deficient number, since it is larger than the sum of its proper divisors (201212006524).

402424013042 is a wasteful number, since it uses less digits than its factorization.

402424013042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201212006523.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 402424013042 its reverse (240310424204), we get a palindrome (642734437246).

The spelling of 402424013042 in words is "four hundred two billion, four hundred twenty-four million, thirteen thousand, forty-two".