145242285 has 16 divisors (see below), whose sum is σ = 239884800. Its totient is φ = 74963520.

The previous prime is 145242277. The next prime is 145242299. The reversal of 145242285 is 582242541.

It is not a de Polignac number, because 145242285 - 2³ = 145242277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155710 + ... + 156639.

It is an arithmetic number, because the mean of its divisors is an integer number (14992800).

Almost surely, 2^145242285 is an apocalyptic number.

145242285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145242285 is a deficient number, since it is larger than the sum of its proper divisors (94642515).

145242285 is a wasteful number, since it uses less digits than its factorization.

145242285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312388.

The product of its digits is 25600, while the sum is 33.

The square root of 145242285 is about 12051.6507168105. The cubic root of 145242285 is about 525.6512371891.

The spelling of 145242285 in words is "one hundred forty-five million, two hundred forty-two thousand, two hundred eighty-five".