42953261 has 4 divisors (see below), whose sum is σ = 46257372. Its totient is φ = 39649152.

The previous prime is 42953257. The next prime is 42953279. The reversal of 42953261 is 16235924.

It is a happy number.

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 27984100 + 14969161 = 5290^2 + 3869^2 .

It is a cyclic number.

It is not a de Polignac number, because 42953261 - 2² = 42953257 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 (42953201) 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, 1652036 + ... + 1652061.

It is an arithmetic number, because the mean of its divisors is an integer number (11564343).

Almost surely, 2^42953261 is an apocalyptic number.

It is an amenable number.

42953261 is a deficient number, since it is larger than the sum of its proper divisors (3304111).

42953261 is a wasteful number, since it uses less digits than its factorization.

42953261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304110.

The product of its digits is 12960, while the sum is 32.

The square root of 42953261 is about 6553.8737400106. The cubic root of 42953261 is about 350.2128256622.

The spelling of 42953261 in words is "forty-two million, nine hundred fifty-three thousand, two hundred sixty-one".