42144020437 has 2 divisors, whose sum is σ = 42144020438. Its totient is φ = 42144020436.

The previous prime is 42144020393. The next prime is 42144020467. The reversal of 42144020437 is 73402044124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36471068676 + 5672951761 = 190974^2 + 75319^2 .

It is a cyclic number.

It is not a de Polignac number, because 42144020437 - 2¹⁹ = 42143496149 is a prime.

It is a super-2 number, since 2×42144020437² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42144020399 and 42144020408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42144020467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21072010218 + 21072010219.

It is an arithmetic number, because the mean of its divisors is an integer number (21072010219).

Almost surely, 2^42144020437 is an apocalyptic number.

It is an amenable number.

42144020437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42144020437 is an equidigital number, since it uses as much as digits as its factorization.

42144020437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 31.

The spelling of 42144020437 in words is "forty-two billion, one hundred forty-four million, twenty thousand, four hundred thirty-seven".