42402004237 has 2 divisors, whose sum is σ = 42402004238. Its totient is φ = 42402004236.

The previous prime is 42402004219. The next prime is 42402004279. The reversal of 42402004237 is 73240020424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40244773321 + 2157230916 = 200611^2 + 46446^2 .

It is a cyclic number.

It is not a de Polignac number, because 42402004237 - 2⁷ = 42402004109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42402704237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201002118 + 21201002119.

It is an arithmetic number, because the mean of its divisors is an integer number (21201002119).

Almost surely, 2^42402004237 is an apocalyptic number.

It is an amenable number.

42402004237 is a deficient number, since it is larger than the sum of its proper divisors (1).

42402004237 is an equidigital number, since it uses as much as digits as its factorization.

42402004237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 28.

The spelling of 42402004237 in words is "forty-two billion, four hundred two million, four thousand, two hundred thirty-seven".