42261723 has 32 divisors (see below), whose sum is σ = 72921600. Its totient is φ = 23688288.

The previous prime is 42261707. The next prime is 42261743. The reversal of 42261723 is 32716224.

42261723 is a `hidden beast` number, since 4 + 22 + 617 + 23 = 666.

It is not a de Polignac number, because 42261723 - 2⁴ = 42261707 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42261743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7908 + ... + 12126.

It is an arithmetic number, because the mean of its divisors is an integer number (2278800).

Almost surely, 2^42261723 is an apocalyptic number.

42261723 is a deficient number, since it is larger than the sum of its proper divisors (30659877).

42261723 is a wasteful number, since it uses less digits than its factorization.

42261723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288 (or 4282 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 42261723 is about 6500.9017066865. The cubic root of 42261723 is about 348.3231985533.

Adding to 42261723 its reverse (32716224), we get a palindrome (74977947).

The spelling of 42261723 in words is "forty-two million, two hundred sixty-one thousand, seven hundred twenty-three".