42132109997 has 2 divisors, whose sum is σ = 42132109998. Its totient is φ = 42132109996.

The previous prime is 42132109993. The next prime is 42132110023. The reversal of 42132109997 is 79990123124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41308936516 + 823173481 = 203246^2 + 28691^2 .

It is a cyclic number.

It is not a de Polignac number, because 42132109997 - 2² = 42132109993 is a prime.

It is a super-2 number, since 2×42132109997² (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 (42132109993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21066054998 + 21066054999.

It is an arithmetic number, because the mean of its divisors is an integer number (21066054999).

Almost surely, 2^42132109997 is an apocalyptic number.

It is an amenable number.

42132109997 is a deficient number, since it is larger than the sum of its proper divisors (1).

42132109997 is an equidigital number, since it uses as much as digits as its factorization.

42132109997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 42132109997 in words is "forty-two billion, one hundred thirty-two million, one hundred nine thousand, nine hundred ninety-seven".