135125890 has 16 divisors (see below), whose sum is σ = 243365760. Its totient is φ = 54019440.

The previous prime is 135125857. The next prime is 135125923. The reversal of 135125890 is 98521531.

135125890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (135125857) and next prime (135125923).

It is a super-2 number, since 2×135125890² = 36518012296584200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24181 + ... + 29239.

It is an arithmetic number, because the mean of its divisors is an integer number (15210360).

Almost surely, 2^135125890 is an apocalyptic number.

135125890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135125890 is a deficient number, since it is larger than the sum of its proper divisors (108239870).

135125890 is a wasteful number, since it uses less digits than its factorization.

135125890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7737.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 135125890 is about 11624.3662192827. The cubic root of 135125890 is about 513.1521928863.

It can be divided in two parts, 135 and 125890, that added together give a square (126025 = 355²).

The spelling of 135125890 in words is "one hundred thirty-five million, one hundred twenty-five thousand, eight hundred ninety".