139820820246 has 48 divisors (see below), whose sum is σ = 318469014864. Its totient is φ = 45968477184.

The previous prime is 139820820151. The next prime is 139820820253. The reversal of 139820820246 is 642028028931.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1935051 + ... + 2006006.

It is an arithmetic number, because the mean of its divisors is an integer number (6634771143).

Almost surely, 2^139820820246 is an apocalyptic number.

139820820246 is an abundant number, since it is smaller than the sum of its proper divisors (178648194618).

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

139820820246 is an equidigital number, since it uses as much as digits as its factorization.

139820820246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941147 (or 3941135 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 139820820246 in words is "one hundred thirty-nine billion, eight hundred twenty million, eight hundred twenty thousand, two hundred forty-six".