42153723 has 16 divisors (see below), whose sum is σ = 65737600. Its totient is φ = 26623080.

The previous prime is 42153721. The next prime is 42153737. The reversal of 42153723 is 32735124.

It is not a de Polignac number, because 42153723 - 2¹ = 42153721 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42153721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40573 + ... + 41598.

It is an arithmetic number, because the mean of its divisors is an integer number (4108600).

Almost surely, 2^42153723 is an apocalyptic number.

42153723 is a deficient number, since it is larger than the sum of its proper divisors (23583877).

42153723 is a wasteful number, since it uses less digits than its factorization.

42153723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82199 (or 82193 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 42153723 is about 6492.5898530556. The cubic root of 42153723 is about 348.0262316731.

Adding to 42153723 its reverse (32735124), we get a palindrome (74888847).

The spelling of 42153723 in words is "forty-two million, one hundred fifty-three thousand, seven hundred twenty-three".