42293261 has 4 divisors (see below), whose sum is σ = 42729372. Its totient is φ = 41857152.

The previous prime is 42293243. The next prime is 42293287. The reversal of 42293261 is 16239224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30085225 + 12208036 = 5485^2 + 3494^2 .

It is a cyclic number.

It is not a de Polignac number, because 42293261 - 2⁶ = 42293197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42293761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217910 + ... + 218103.

It is an arithmetic number, because the mean of its divisors is an integer number (10682343).

Almost surely, 2^42293261 is an apocalyptic number.

It is an amenable number.

42293261 is a deficient number, since it is larger than the sum of its proper divisors (436111).

42293261 is an equidigital number, since it uses as much as digits as its factorization.

42293261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436110.

The product of its digits is 5184, while the sum is 29.

The square root of 42293261 is about 6503.3269178168. The cubic root of 42293261 is about 348.4098229244.

The spelling of 42293261 in words is "forty-two million, two hundred ninety-three thousand, two hundred sixty-one".