42903720 has 96 divisors (see below), whose sum is σ = 143250120. Its totient is φ = 11128320.

The previous prime is 42903709. The next prime is 42903761. The reversal of 42903720 is 2730924.

42903720 is a `hidden beast` number, since 4 + 290 + 372 + 0 = 666.

42903720 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 4 ways, for example, as 42536484 + 367236 = 6522^2 + 606^2 .

It is a zygodrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11710 + ... + 14930.

Almost surely, 2^42903720 is an apocalyptic number.

42903720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42903720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71625060).

42903720 is an abundant number, since it is smaller than the sum of its proper divisors (100346400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42903720 is a wasteful number, since it uses less digits than its factorization.

42903720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275 (or 3268 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 42903720 is about 6550.0931291089. The cubic root of 42903720 is about 350.0781322167.

The spelling of 42903720 in words is "forty-two million, nine hundred three thousand, seven hundred twenty".