145121470 has 16 divisors (see below), whose sum is σ = 281312640. Its totient is φ = 53583264.

The previous prime is 145121461. The next prime is 145121489. The reversal of 145121470 is 74121541.

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, 558030 + ... + 558289.

It is an arithmetic number, because the mean of its divisors is an integer number (17582040).

Almost surely, 2^145121470 is an apocalyptic number.

145121470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145121470 is a deficient number, since it is larger than the sum of its proper divisors (136191170).

145121470 is a wasteful number, since it uses less digits than its factorization.

145121470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116339.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 145121470 is about 12046.6372901320. The cubic root of 145121470 is about 525.5054482155.

The spelling of 145121470 in words is "one hundred forty-five million, one hundred twenty-one thousand, four hundred seventy".