42003046423621 has 2 divisors, whose sum is σ = 42003046423622. Its totient is φ = 42003046423620.

The previous prime is 42003046423567. The next prime is 42003046423729. The reversal of 42003046423621 is 12632464030024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29365831950625 + 12637214472996 = 5419025^2 + 3554886^2 .

It is a cyclic number.

It is not a de Polignac number, because 42003046423621 - 2³⁹ = 41453290609733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42003046403621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001523211810 + 21001523211811.

It is an arithmetic number, because the mean of its divisors is an integer number (21001523211811).

Almost surely, 2^{42003046423621} is an apocalyptic number.

It is an amenable number.

42003046423621 is a deficient number, since it is larger than the sum of its proper divisors (1).

42003046423621 is an equidigital number, since it uses as much as digits as its factorization.

42003046423621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 37.

The spelling of 42003046423621 in words is "forty-two trillion, three billion, forty-six million, four hundred twenty-three thousand, six hundred twenty-one".