145920415 has 16 divisors (see below), whose sum is σ = 180280512. Its totient is φ = 113301504.

The previous prime is 145920413. The next prime is 145920419. The reversal of 145920415 is 514029541.

145920415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 145920415 - 2¹ = 145920413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145920413) 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, 106062 + ... + 107428.

It is an arithmetic number, because the mean of its divisors is an integer number (11267532).

Almost surely, 2^145920415 is an apocalyptic number.

145920415 is a deficient number, since it is larger than the sum of its proper divisors (34360097).

145920415 is a wasteful number, since it uses less digits than its factorization.

145920415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 145920415 is about 12079.7522739500. The cubic root of 145920415 is about 526.4680483143.

Adding to 145920415 its reverse (514029541), we get a palindrome (659949956).

The spelling of 145920415 in words is "one hundred forty-five million, nine hundred twenty thousand, four hundred fifteen".