42146437 has 2 divisors, whose sum is σ = 42146438. Its totient is φ = 42146436.

The previous prime is 42146413. The next prime is 42146443. The reversal of 42146437 is 73464124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24117921 + 18028516 = 4911^2 + 4246^2 .

It is a cyclic number.

It is not a de Polignac number, because 42146437 - 2¹⁹ = 41622149 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42146399 and 42146408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42146497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21073218 + 21073219.

It is an arithmetic number, because the mean of its divisors is an integer number (21073219).

Almost surely, 2^42146437 is an apocalyptic number.

It is an amenable number.

42146437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42146437 is an equidigital number, since it uses as much as digits as its factorization.

42146437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 42146437 is about 6492.0287276013. The cubic root of 42146437 is about 348.0061791522.

The spelling of 42146437 in words is "forty-two million, one hundred forty-six thousand, four hundred thirty-seven".