42651243 has 6 divisors (see below), whose sum is σ = 61607364. Its totient is φ = 28434156.

The previous prime is 42651233. The next prime is 42651253. The reversal of 42651243 is 34215624.

42651243 is a `hidden beast` number, since 4 + 2 + 651 + 2 + 4 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (42651233) and next prime (42651253).

It is not a de Polignac number, because 42651243 - 2⁵ = 42651211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42651233) 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, 2369505 + ... + 2369522.

It is an arithmetic number, because the mean of its divisors is an integer number (10267894).

Almost surely, 2^42651243 is an apocalyptic number.

42651243 is a deficient number, since it is larger than the sum of its proper divisors (18956121).

42651243 is a wasteful number, since it uses less digits than its factorization.

42651243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4739033 (or 4739030 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 42651243 is about 6530.7919121650. The cubic root of 42651243 is about 349.3900751515.

Adding to 42651243 its reverse (34215624), we get a palindrome (76866867).

The spelling of 42651243 in words is "forty-two million, six hundred fifty-one thousand, two hundred forty-three".