42156211235 has 4 divisors (see below), whose sum is σ = 50587453488. Its totient is φ = 33724968984.

The previous prime is 42156211177. The next prime is 42156211267. The reversal of 42156211235 is 53211265124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42156211235 - 2¹⁶ = 42156145699 is a prime.

It is a super-2 number, since 2×42156211235² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4215621119 + ... + 4215621128.

It is an arithmetic number, because the mean of its divisors is an integer number (12646863372).

Almost surely, 2^42156211235 is an apocalyptic number.

42156211235 is a deficient number, since it is larger than the sum of its proper divisors (8431242253).

42156211235 is an equidigital number, since it uses as much as digits as its factorization.

42156211235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8431242252.

The product of its digits is 14400, while the sum is 32.

Adding to 42156211235 its reverse (53211265124), we get a palindrome (95367476359).

The spelling of 42156211235 in words is "forty-two billion, one hundred fifty-six million, two hundred eleven thousand, two hundred thirty-five".