42753261 has 4 divisors (see below), whose sum is σ = 57004352. Its totient is φ = 28502172.

The previous prime is 42753239. The next prime is 42753281. The reversal of 42753261 is 16235724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42753261 - 2¹¹ = 42751213 is a prime.

It is a super-2 number, since 2×42753261² = 3655682652268242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42753281) 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, 7125541 + ... + 7125546.

It is an arithmetic number, because the mean of its divisors is an integer number (14251088).

Almost surely, 2^42753261 is an apocalyptic number.

It is an amenable number.

42753261 is a deficient number, since it is larger than the sum of its proper divisors (14251091).

42753261 is a wasteful number, since it uses less digits than its factorization.

42753261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14251090.

The product of its digits is 10080, while the sum is 30.

The square root of 42753261 is about 6538.5977854583. The cubic root of 42753261 is about 349.6684233912.

Adding to 42753261 its reverse (16235724), we get a palindrome (58988985).

The spelling of 42753261 in words is "forty-two million, seven hundred fifty-three thousand, two hundred sixty-one".