42099029824 has 14 divisors (see below), whose sum is σ = 83540262434. Its totient is φ = 21049514880.

The previous prime is 42099029783. The next prime is 42099029827. The reversal of 42099029824 is 42892099024.

It can be written as a sum of positive squares in only one way, i.e., 36163868224 + 5935161600 = 190168^2 + 77040^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42099029827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328898607 + ... + 328898734.

Almost surely, 2^42099029824 is an apocalyptic number.

It is an amenable number.

42099029824 is a deficient number, since it is larger than the sum of its proper divisors (41441232610).

42099029824 is an equidigital number, since it uses as much as digits as its factorization.

42099029824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657797353 (or 657797343 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 42099029824 in words is "forty-two billion, ninety-nine million, twenty-nine thousand, eight hundred twenty-four".