145144870 has 16 divisors (see below), whose sum is σ = 281358000. Its totient is φ = 53591904.

The previous prime is 145144837. The next prime is 145144903. The reversal of 145144870 is 78441541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145144837) and next prime (145144903).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558120 + ... + 558379.

It is an arithmetic number, because the mean of its divisors is an integer number (17584875).

Almost surely, 2^145144870 is an apocalyptic number.

145144870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145144870 is a deficient number, since it is larger than the sum of its proper divisors (136213130).

145144870 is a wasteful number, since it uses less digits than its factorization.

145144870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116519.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 145144870 is about 12047.6084763741. The cubic root of 145144870 is about 525.5336916050.

The spelling of 145144870 in words is "one hundred forty-five million, one hundred forty-four thousand, eight hundred seventy".