139149045 has 48 divisors (see below), whose sum is σ = 283121280. Its totient is φ = 61886592.

The previous prime is 139149001. The next prime is 139149053. The reversal of 139149045 is 540941931.

It is a happy number.

It is not a de Polignac number, because 139149045 - 2¹³ = 139140853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5686 + ... + 17624.

It is an arithmetic number, because the mean of its divisors is an integer number (5898360).

Almost surely, 2^139149045 is an apocalyptic number.

139149045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139149045 is an abundant number, since it is smaller than the sum of its proper divisors (143972235).

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

139149045 is a wasteful number, since it uses less digits than its factorization.

139149045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11994 (or 11991 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 139149045 is about 11796.1453449845. The cubic root of 139149045 is about 518.1952288563.

The spelling of 139149045 in words is "one hundred thirty-nine million, one hundred forty-nine thousand, forty-five".