40026735401242 has 4 divisors (see below), whose sum is σ = 60040103101866. Its totient is φ = 20013367700620.

The previous prime is 40026735401231. The next prime is 40026735401243. The reversal of 40026735401242 is 24210453762004.

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., 36122155449241 + 3904579952001 = 6010171^2 + 1976001^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 40026735401195 and 40026735401204.

It is not an unprimeable number, because it can be changed into a prime (40026735401243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006683850309 + ... + 10006683850312.

Almost surely, 2^{40026735401242} is an apocalyptic number.

40026735401242 is a deficient number, since it is larger than the sum of its proper divisors (20013367700624).

40026735401242 is a wasteful number, since it uses less digits than its factorization.

40026735401242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20013367700623.

The product of its (nonzero) digits is 322560, while the sum is 40.

The spelling of 40026735401242 in words is "forty trillion, twenty-six billion, seven hundred thirty-five million, four hundred one thousand, two hundred forty-two".