139541402 has 64 divisors (see below), whose sum is σ = 287207424. Its totient is φ = 49083840.

The previous prime is 139541401. The next prime is 139541411. The reversal of 139541402 is 204145931.

It is not an unprimeable number, because it can be changed into a prime (139541401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93353 + ... + 94835.

It is an arithmetic number, because the mean of its divisors is an integer number (4487616).

Almost surely, 2^139541402 is an apocalyptic number.

139541402 is an abundant number, since it is smaller than the sum of its proper divisors (147666022).

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

139541402 is a wasteful number, since it uses less digits than its factorization.

139541402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 139541402 is about 11812.7643674121. The cubic root of 139541402 is about 518.6818215522.

The spelling of 139541402 in words is "one hundred thirty-nine million, five hundred forty-one thousand, four hundred two".