135120146 has 12 divisors (see below), whose sum is σ = 235771038. Its totient is φ = 57908592.

The previous prime is 135120143. The next prime is 135120149. The reversal of 135120146 is 641021531.

It is an interprime number because it is at equal distance from previous prime (135120143) and next prime (135120149).

It can be written as a sum of positive squares in only one way, i.e., 132595225 + 2524921 = 11515^2 + 1589^2 .

It is a super-2 number, since 2×135120146² = 36514907710122632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135120143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 689291 + ... + 689486.

Almost surely, 2^135120146 is an apocalyptic number.

135120146 is a deficient number, since it is larger than the sum of its proper divisors (100650892).

135120146 is a wasteful number, since it uses less digits than its factorization.

135120146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378793 (or 1378786 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 135120146 is about 11624.1191494238. The cubic root of 135120146 is about 513.1449216719.

Adding to 135120146 its reverse (641021531), we get a palindrome (776141677).

The spelling of 135120146 in words is "one hundred thirty-five million, one hundred twenty thousand, one hundred forty-six".