135531542 has 4 divisors (see below), whose sum is σ = 203297316. Its totient is φ = 67765770.

The previous prime is 135531523. The next prime is 135531551. The reversal of 135531542 is 245135531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245135531 = 419 ⋅585049.

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, 33882884 + ... + 33882887.

It is an arithmetic number, because the mean of its divisors is an integer number (50824329).

Almost surely, 2^135531542 is an apocalyptic number.

135531542 is a deficient number, since it is larger than the sum of its proper divisors (67765774).

135531542 is an equidigital number, since it uses as much as digits as its factorization.

135531542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67765773.

The product of its digits is 9000, while the sum is 29.

The square root of 135531542 is about 11641.8014928962. The cubic root of 135531542 is about 513.6651793515.

The spelling of 135531542 in words is "one hundred thirty-five million, five hundred thirty-one thousand, five hundred forty-two".