42072303 has 16 divisors (see below), whose sum is σ = 69042176. Its totient is φ = 22191840.

The previous prime is 42072281. The next prime is 42072311. The reversal of 42072303 is 30327024.

It is a happy number.

It is not a de Polignac number, because 42072303 - 2⁵ = 42072271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 42072303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42072343) 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, 76783 + ... + 77328.

It is an arithmetic number, because the mean of its divisors is an integer number (4315136).

Almost surely, 2^42072303 is an apocalyptic number.

42072303 is a deficient number, since it is larger than the sum of its proper divisors (26969873).

42072303 is a wasteful number, since it uses less digits than its factorization.

42072303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154134.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 42072303 is about 6486.3165972684. The cubic root of 42072303 is about 347.8020161334.

Adding to 42072303 its reverse (30327024), we get a palindrome (72399327).

The spelling of 42072303 in words is "forty-two million, seventy-two thousand, three hundred three".