39920224142 has 4 divisors (see below), whose sum is σ = 59880336216. Its totient is φ = 19960112070.

The previous prime is 39920224139. The next prime is 39920224159. The reversal of 39920224142 is 24142202993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24142202993 = 10567 ⋅2284679.

It is a junction number, because it is equal to n+sod(n) for n = 39920224096 and 39920224105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9980056034 + ... + 9980056037.

It is an arithmetic number, because the mean of its divisors is an integer number (14970084054).

Almost surely, 2^39920224142 is an apocalyptic number.

39920224142 is a deficient number, since it is larger than the sum of its proper divisors (19960112074).

39920224142 is a wasteful number, since it uses less digits than its factorization.

39920224142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19960112073.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 39920224142 in words is "thirty-nine billion, nine hundred twenty million, two hundred twenty-four thousand, one hundred forty-two".