42146420402 has 4 divisors (see below), whose sum is σ = 63219630606. Its totient is φ = 21073210200.

The previous prime is 42146420347. The next prime is 42146420441. The reversal of 42146420402 is 20402464124.

42146420402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 25205055121 + 16941365281 = 158761^2 + 130159^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10536605099 + ... + 10536605102.

Almost surely, 2^42146420402 is an apocalyptic number.

42146420402 is a deficient number, since it is larger than the sum of its proper divisors (21073210204).

42146420402 is a wasteful number, since it uses less digits than its factorization.

42146420402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21073210203.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 42146420402 its reverse (20402464124), we get a palindrome (62548884526).

The spelling of 42146420402 in words is "forty-two billion, one hundred forty-six million, four hundred twenty thousand, four hundred two".