42003046423561 has 4 divisors (see below), whose sum is σ = 42137241460372. Its totient is φ = 41868851386752.

The previous prime is 42003046423523. The next prime is 42003046423567. The reversal of 42003046423561 is 16532464030024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73018307961 + 41930028115600 = 270219^2 + 6475340^2 .

It is a cyclic number.

It is not a de Polignac number, because 42003046423561 - 2⁹ = 42003046423049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42003046423567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67097517936 + ... + 67097518561.

It is an arithmetic number, because the mean of its divisors is an integer number (10534310365093).

Almost surely, 2^{42003046423561} is an apocalyptic number.

It is an amenable number.

42003046423561 is a deficient number, since it is larger than the sum of its proper divisors (134195036811).

42003046423561 is a wasteful number, since it uses less digits than its factorization.

42003046423561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134195036810.

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 42003046423561 in words is "forty-two trillion, three billion, forty-six million, four hundred twenty-three thousand, five hundred sixty-one".