42720403502 has 16 divisors (see below), whose sum is σ = 73247170560. Its totient is φ = 18305696088.

The previous prime is 42720403489. The next prime is 42720403519. The reversal of 42720403502 is 20530402724.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165878 + ... + 336089.

It is an arithmetic number, because the mean of its divisors is an integer number (4577948160).

Almost surely, 2^42720403502 is an apocalyptic number.

42720403502 is a deficient number, since it is larger than the sum of its proper divisors (30526767058).

42720403502 is a wasteful number, since it uses less digits than its factorization.

42720403502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508055.

The product of its (nonzero) digits is 13440, while the sum is 29.

The spelling of 42720403502 in words is "forty-two billion, seven hundred twenty million, four hundred three thousand, five hundred two".