145371970 has 16 divisors (see below), whose sum is σ = 261827640. Its totient is φ = 58113664.

The previous prime is 145371959. The next prime is 145371971. The reversal of 145371970 is 79173541.

It can be written as a sum of positive squares in 4 ways, for example, as 143352729 + 2019241 = 11973^2 + 1421^2 .

It is a super-2 number, since 2×145371970² = 42266019323361800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145371971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18846 + ... + 25414.

Almost surely, 2^145371970 is an apocalyptic number.

145371970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145371970 is a deficient number, since it is larger than the sum of its proper divisors (116455670).

145371970 is a wasteful number, since it uses less digits than its factorization.

145371970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8789.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 145371970 is about 12057.0298996063. The cubic root of 145371970 is about 525.8076397630.

The spelling of 145371970 in words is "one hundred forty-five million, three hundred seventy-one thousand, nine hundred seventy".