136908542 has 4 divisors (see below), whose sum is σ = 205362816. Its totient is φ = 68454270.

The previous prime is 136908523. The next prime is 136908559. The reversal of 136908542 is 245809631.

It is a happy number.

136908542 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245809631 = 19 ⋅12937349.

It is a junction number, because it is equal to n+sod(n) for n = 136908496 and 136908505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34227134 + ... + 34227137.

It is an arithmetic number, because the mean of its divisors is an integer number (51340704).

Almost surely, 2^136908542 is an apocalyptic number.

136908542 is a deficient number, since it is larger than the sum of its proper divisors (68454274).

136908542 is an equidigital number, since it uses as much as digits as its factorization.

136908542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68454273.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 136908542 is about 11700.7923663314. The cubic root of 136908542 is about 515.3989330487.

The spelling of 136908542 in words is "one hundred thirty-six million, nine hundred eight thousand, five hundred forty-two".