202400342042 has 4 divisors (see below), whose sum is σ = 303600513066. Its totient is φ = 101200171020.

The previous prime is 202400341999. The next prime is 202400342051. The reversal of 202400342042 is 240243004202.

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., 143064741121 + 59335600921 = 378239^2 + 243589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202400341999 and 202400342017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50600085509 + ... + 50600085512.

Almost surely, 2^202400342042 is an apocalyptic number.

202400342042 is a deficient number, since it is larger than the sum of its proper divisors (101200171024).

202400342042 is a wasteful number, since it uses less digits than its factorization.

202400342042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101200171023.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 202400342042 its reverse (240243004202), we get a palindrome (442643346244).

The spelling of 202400342042 in words is "two hundred two billion, four hundred million, three hundred forty-two thousand, forty-two".