42753917 has 8 divisors (see below), whose sum is σ = 44306040. Its totient is φ = 41256096.

The previous prime is 42753913. The next prime is 42753923. The reversal of 42753917 is 71935724.

It can be written as a sum of positive squares in 4 ways, for example, as 3076516 + 39677401 = 1754^2 + 6299^2 .

It is not a de Polignac number, because 42753917 - 2² = 42753913 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 (42753913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23513 + ... + 25265.

It is an arithmetic number, because the mean of its divisors is an integer number (5538255).

Almost surely, 2^42753917 is an apocalyptic number.

It is an amenable number.

42753917 is a deficient number, since it is larger than the sum of its proper divisors (1552123).

42753917 is an frugal number, since it uses more digits than its factorization.

42753917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840 (or 1782 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The square root of 42753917 is about 6538.6479489264. The cubic root of 42753917 is about 349.6702118030.

It can be divided in two parts, 4275 and 3917, that added together give a 13-th power (8192 = 2¹³).

The spelling of 42753917 in words is "forty-two million, seven hundred fifty-three thousand, nine hundred seventeen".