135012142 has 4 divisors (see below), whose sum is σ = 202518216. Its totient is φ = 67506070.

The previous prime is 135012133. The next prime is 135012151. The reversal of 135012142 is 241210531.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (135012133) and next prime (135012151).

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, 33753034 + ... + 33753037.

It is an arithmetic number, because the mean of its divisors is an integer number (50629554).

Almost surely, 2^135012142 is an apocalyptic number.

135012142 is a deficient number, since it is larger than the sum of its proper divisors (67506074).

135012142 is an equidigital number, since it uses as much as digits as its factorization.

135012142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67506073.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 135012142 is about 11619.4725353606. The cubic root of 135012142 is about 513.0081631923.

Adding to 135012142 its reverse (241210531), we get a palindrome (376222673).

The spelling of 135012142 in words is "one hundred thirty-five million, twelve thousand, one hundred forty-two".