145129856 has 16 divisors (see below), whose sum is σ = 289126140. Its totient is φ = 72564864.

The previous prime is 145129837. The next prime is 145129921. The reversal of 145129856 is 658921541.

It is a tau number, because it is divible by the number of its divisors (16).

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, 566786 + ... + 567041.

Almost surely, 2^145129856 is an apocalyptic number.

145129856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145129856 is a deficient number, since it is larger than the sum of its proper divisors (143996284).

145129856 is an equidigital number, since it uses as much as digits as its factorization.

145129856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133841 (or 1133829 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The square root of 145129856 is about 12046.9853490406. The cubic root of 145129856 is about 525.5155703194.

The spelling of 145129856 in words is "one hundred forty-five million, one hundred twenty-nine thousand, eight hundred fifty-six".