42729621620 has 48 divisors (see below), whose sum is σ = 102563303808. Its totient is φ = 14648411520.

The previous prime is 42729621617. The next prime is 42729621629. The reversal of 42729621620 is 2612692724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42729621629) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1832354 + ... + 1855526.

It is an arithmetic number, because the mean of its divisors is an integer number (2136735496).

Almost surely, 2^42729621620 is an apocalyptic number.

It is an amenable number.

42729621620 is an abundant number, since it is smaller than the sum of its proper divisors (59833682188).

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

42729621620 is a wasteful number, since it uses less digits than its factorization.

42729621620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36360 (or 36358 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 42729621620 in words is "forty-two billion, seven hundred twenty-nine million, six hundred twenty-one thousand, six hundred twenty".