40545340514242 has 4 divisors (see below), whose sum is σ = 60818010771366. Its totient is φ = 20272670257120.

The previous prime is 40545340514227. The next prime is 40545340514297. The reversal of 40545340514242 is 24241504354504.

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., 23278415202441 + 17266925311801 = 4824771^2 + 4155349^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10136335128559 + ... + 10136335128562.

Almost surely, 2^{40545340514242} is an apocalyptic number.

40545340514242 is a deficient number, since it is larger than the sum of its proper divisors (20272670257124).

40545340514242 is a wasteful number, since it uses less digits than its factorization.

40545340514242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20272670257123.

The product of its (nonzero) digits is 1536000, while the sum is 43.

Adding to 40545340514242 its reverse (24241504354504), we get a palindrome (64786844868746).

The spelling of 40545340514242 in words is "forty trillion, five hundred forty-five billion, three hundred forty million, five hundred fourteen thousand, two hundred forty-two".