42904376281 has 6 divisors (see below), whose sum is σ = 46458585150. Its totient is φ = 39604039488.

The previous prime is 42904376267. The next prime is 42904376303. The reversal of 42904376281 is 18267340924.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4034282256 + 38870094025 = 63516^2 + 197155^2 .

It is not a de Polignac number, because 42904376281 - 2⁷ = 42904376153 is a prime.

It is a super-2 number, since 2×42904376281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42904376201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126935856 + ... + 126936193.

It is an arithmetic number, because the mean of its divisors is an integer number (7743097525).

Almost surely, 2^42904376281 is an apocalyptic number.

It is an amenable number.

42904376281 is a deficient number, since it is larger than the sum of its proper divisors (3554208869).

42904376281 is a wasteful number, since it uses less digits than its factorization.

42904376281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253872075 (or 253872062 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 42904376281 in words is "forty-two billion, nine hundred four million, three hundred seventy-six thousand, two hundred eighty-one".