139745342 has 16 divisors (see below), whose sum is σ = 240710400. Its totient is φ = 60177240.

The previous prime is 139745311. The next prime is 139745351. The reversal of 139745342 is 243547931.

139745342 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139745342² = 39057521221393928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 139745296 and 139745305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166742 + ... + 167577.

It is an arithmetic number, because the mean of its divisors is an integer number (15044400).

Almost surely, 2^139745342 is an apocalyptic number.

139745342 is a deficient number, since it is larger than the sum of its proper divisors (100965058).

139745342 is a wasteful number, since it uses less digits than its factorization.

139745342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334351.

The product of its digits is 90720, while the sum is 38.

The square root of 139745342 is about 11821.3934034867. The cubic root of 139745342 is about 518.9343833450.

The spelling of 139745342 in words is "one hundred thirty-nine million, seven hundred forty-five thousand, three hundred forty-two".