139020544 has 72 divisors (see below), whose sum is σ = 307192760. Its totient is φ = 62373888.

The previous prime is 139020527. The next prime is 139020559. The reversal of 139020544 is 445020931.

It can be written as a sum of positive squares in 4 ways, for example, as 4460544 + 134560000 = 2112^2 + 11600^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122572 + ... + 123700.

Almost surely, 2^139020544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139020544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153596380).

139020544 is an abundant number, since it is smaller than the sum of its proper divisors (168172216).

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

139020544 is a wasteful number, since it uses less digits than its factorization.

139020544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 139020544 is about 11790.6973500298. The cubic root of 139020544 is about 518.0356658656.

The spelling of 139020544 in words is "one hundred thirty-nine million, twenty thousand, five hundred forty-four".