139742554 has 8 divisors (see below), whose sum is σ = 239558688. Its totient is φ = 59889660.

The previous prime is 139742531. The next prime is 139742569. The reversal of 139742554 is 455247931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4990792 + ... + 4990819.

It is an arithmetic number, because the mean of its divisors is an integer number (29944836).

Almost surely, 2^139742554 is an apocalyptic number.

139742554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

139742554 is a deficient number, since it is larger than the sum of its proper divisors (99816134).

139742554 is an equidigital number, since it uses as much as digits as its factorization.

139742554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9981620.

The product of its digits is 151200, while the sum is 40.

The square root of 139742554 is about 11821.2754810976. The cubic root of 139742554 is about 518.9309323088.

The spelling of 139742554 in words is "one hundred thirty-nine million, seven hundred forty-two thousand, five hundred fifty-four".