135078142 has 4 divisors (see below), whose sum is σ = 202617216. Its totient is φ = 67539070.

The previous prime is 135078137. The next prime is 135078173. The reversal of 135078142 is 241870531.

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

It is a super-2 number, since 2×135078142² = 36492208892344328, which contains 22 as substring.

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, 33769534 + ... + 33769537.

It is an arithmetic number, because the mean of its divisors is an integer number (50654304).

Almost surely, 2^135078142 is an apocalyptic number.

135078142 is a deficient number, since it is larger than the sum of its proper divisors (67539074).

135078142 is an equidigital number, since it uses as much as digits as its factorization.

135078142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67539073.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 135078142 is about 11622.3122484297. The cubic root of 135078142 is about 513.0917433863.

The spelling of 135078142 in words is "one hundred thirty-five million, seventy-eight thousand, one hundred forty-two".