145129777 has 8 divisors (see below), whose sum is σ = 156413376. Its totient is φ = 133863312.

The previous prime is 145129757. The next prime is 145129801. The reversal of 145129777 is 777921541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145129777 - 2²³ = 136741169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145129727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17418 + ... + 24364.

It is an arithmetic number, because the mean of its divisors is an integer number (19551672).

Almost surely, 2^145129777 is an apocalyptic number.

It is an amenable number.

145129777 is a deficient number, since it is larger than the sum of its proper divisors (11283599).

145129777 is a wasteful number, since it uses less digits than its factorization.

145129777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8567.

The product of its digits is 123480, while the sum is 43.

The square root of 145129777 is about 12046.9820702116. The cubic root of 145129777 is about 525.5154749663.

The spelling of 145129777 in words is "one hundred forty-five million, one hundred twenty-nine thousand, seven hundred seventy-seven".