42211537 has 2 divisors, whose sum is σ = 42211538. Its totient is φ = 42211536.

The previous prime is 42211531. The next prime is 42211571. The reversal of 42211537 is 73511224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41357761 + 853776 = 6431^2 + 924^2 .

It is a cyclic number.

It is not a de Polignac number, because 42211537 - 2³ = 42211529 is a prime.

It is not a weakly prime, because it can be changed into another prime (42211531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21105768 + 21105769.

It is an arithmetic number, because the mean of its divisors is an integer number (21105769).

Almost surely, 2^42211537 is an apocalyptic number.

It is an amenable number.

42211537 is a deficient number, since it is larger than the sum of its proper divisors (1).

42211537 is an equidigital number, since it uses as much as digits as its factorization.

42211537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 42211537 is about 6497.0406340118. The cubic root of 42211537 is about 348.1852654471.

The spelling of 42211537 in words is "forty-two million, two hundred eleven thousand, five hundred thirty-seven".