42123014447 has 2 divisors, whose sum is σ = 42123014448. Its totient is φ = 42123014446.

The previous prime is 42123014429. The next prime is 42123014471. The reversal of 42123014447 is 74441032124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42123014447 - 2¹² = 42123010351 is a prime.

It is a super-2 number, since 2×42123014447² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42123014047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061507223 + 21061507224.

It is an arithmetic number, because the mean of its divisors is an integer number (21061507224).

Almost surely, 2^42123014447 is an apocalyptic number.

42123014447 is a deficient number, since it is larger than the sum of its proper divisors (1).

42123014447 is an equidigital number, since it uses as much as digits as its factorization.

42123014447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 32.

The spelling of 42123014447 in words is "forty-two billion, one hundred twenty-three million, fourteen thousand, four hundred forty-seven".