145387427 has 16 divisors (see below), whose sum is σ = 154524672. Its totient is φ = 136587360.

The previous prime is 145387423. The next prime is 145387471. The reversal of 145387427 is 724783541.

It is not a de Polignac number, because 145387427 - 2² = 145387423 is a prime.

It is a super-2 number, since 2×145387427² = 42275007859360658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145387423) 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, 175388 + ... + 176214.

It is an arithmetic number, because the mean of its divisors is an integer number (9657792).

Almost surely, 2^145387427 is an apocalyptic number.

145387427 is a deficient number, since it is larger than the sum of its proper divisors (9137245).

145387427 is a wasteful number, since it uses less digits than its factorization.

145387427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018.

The product of its digits is 188160, while the sum is 41.

The square root of 145387427 is about 12057.6708779100. The cubic root of 145387427 is about 525.8262749939.

The spelling of 145387427 in words is "one hundred forty-five million, three hundred eighty-seven thousand, four hundred twenty-seven".