40204302423442 has 4 divisors (see below), whose sum is σ = 60306453635166. Its totient is φ = 20102151211720.

The previous prime is 40204302423433. The next prime is 40204302423443. The reversal of 40204302423442 is 24432420340204.

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., 40196627086561 + 7675336881 = 6340081^2 + 87609^2 .

It is a super-2 number, since 2×40204302423442² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40204302423398 and 40204302423407.

It is not an unprimeable number, because it can be changed into a prime (40204302423443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051075605859 + ... + 10051075605862.

Almost surely, 2^{40204302423442} is an apocalyptic number.

40204302423442 is a deficient number, since it is larger than the sum of its proper divisors (20102151211724).

40204302423442 is a wasteful number, since it uses less digits than its factorization.

40204302423442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20102151211723.

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 40204302423442 its reverse (24432420340204), we get a palindrome (64636722763646).

The spelling of 40204302423442 in words is "forty trillion, two hundred four billion, three hundred two million, four hundred twenty-three thousand, four hundred forty-two".