42785326923739 has 2 divisors, whose sum is σ = 42785326923740. Its totient is φ = 42785326923738.

The previous prime is 42785326923707. The next prime is 42785326923743. The reversal of 42785326923739 is 93732962358724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42785326923739 - 2⁵ = 42785326923707 is a prime.

It is a super-2 number, since 2×42785326923739² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42785326923799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21392663461869 + 21392663461870.

It is an arithmetic number, because the mean of its divisors is an integer number (21392663461870).

Almost surely, 2^{42785326923739} is an apocalyptic number.

42785326923739 is a deficient number, since it is larger than the sum of its proper divisors (1).

42785326923739 is an equidigital number, since it uses as much as digits as its factorization.

42785326923739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 823011840, while the sum is 70.

The spelling of 42785326923739 in words is "forty-two trillion, seven hundred eighty-five billion, three hundred twenty-six million, nine hundred twenty-three thousand, seven hundred thirty-nine".