145121570 has 32 divisors (see below), whose sum is σ = 286886016. Its totient is φ = 52416000.

The previous prime is 145121567. The next prime is 145121573. The reversal of 145121570 is 75121541.

It is an interprime number because it is at equal distance from previous prime (145121567) and next prime (145121573).

It is not an unprimeable number, because it can be changed into a prime (145121573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12242 + ... + 20978.

It is an arithmetic number, because the mean of its divisors is an integer number (8965188).

Almost surely, 2^145121570 is an apocalyptic number.

145121570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145121570 is a deficient number, since it is larger than the sum of its proper divisors (141764446).

145121570 is a wasteful number, since it uses less digits than its factorization.

145121570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8906.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 145121570 is about 12046.6414406672. The cubic root of 145121570 is about 525.5055689202.

The spelling of 145121570 in words is "one hundred forty-five million, one hundred twenty-one thousand, five hundred seventy".