42423422402 has 4 divisors (see below), whose sum is σ = 63635133606. Its totient is φ = 21211711200.

The previous prime is 42423422359. The next prime is 42423422453. The reversal of 42423422402 is 20422432424.

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., 40909512121 + 1513910281 = 202261^2 + 38909^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605855599 + ... + 10605855602.

Almost surely, 2^42423422402 is an apocalyptic number.

42423422402 is a deficient number, since it is larger than the sum of its proper divisors (21211711204).

42423422402 is a wasteful number, since it uses less digits than its factorization.

42423422402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21211711203.

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 42423422402 its reverse (20422432424), we get a palindrome (62845854826).

The spelling of 42423422402 in words is "forty-two billion, four hundred twenty-three million, four hundred twenty-two thousand, four hundred two".