42019221031723 has 32 divisors (see below), whose sum is σ = 49801146083136. Its totient is φ = 35090817159168.

The previous prime is 42019221031717. The next prime is 42019221031727. The reversal of 42019221031723 is 32713012291024.

It is a cyclic number.

It is not a de Polignac number, because 42019221031723 - 2⁵ = 42019221031691 is a prime.

It is a super-2 number, since 2×42019221031723² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42019221031727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30277386 + ... + 31634767.

It is an arithmetic number, because the mean of its divisors is an integer number (1556285815098).

Almost surely, 2^{42019221031723} is an apocalyptic number.

42019221031723 is a deficient number, since it is larger than the sum of its proper divisors (7781925051413).

42019221031723 is a wasteful number, since it uses less digits than its factorization.

42019221031723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61912303.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 42019221031723 in words is "forty-two trillion, nineteen billion, two hundred twenty-one million, thirty-one thousand, seven hundred twenty-three".