42003740 has 24 divisors (see below), whose sum is σ = 88508112. Its totient is φ = 16744320.

The previous prime is 42003739. The next prime is 42003751. The reversal of 42003740 is 4730024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2720 + ... + 9560.

It is an arithmetic number, because the mean of its divisors is an integer number (3687838).

Almost surely, 2^42003740 is an apocalyptic number.

It is an amenable number.

42003740 is an abundant number, since it is smaller than the sum of its proper divisors (46504372).

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

42003740 is a wasteful number, since it uses less digits than its factorization.

42003740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7157 (or 7155 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 42003740 is about 6481.0292392490. The cubic root of 42003740 is about 347.6129819123.

Adding to 42003740 its reverse (4730024), we get a palindrome (46733764).

The spelling of 42003740 in words is "forty-two million, three thousand, seven hundred forty".