145420115 has 16 divisors (see below), whose sum is σ = 178823808. Its totient is φ = 113473536.

The previous prime is 145420111. The next prime is 145420117. The reversal of 145420115 is 511024541.

It is a cyclic number.

It is not a de Polignac number, because 145420115 - 2² = 145420111 is a prime.

It is a super-2 number, since 2×145420115² = 42294019693226450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145420111) 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, 82079 + ... + 83831.

It is an arithmetic number, because the mean of its divisors is an integer number (11176488).

Almost surely, 2^145420115 is an apocalyptic number.

145420115 is a deficient number, since it is larger than the sum of its proper divisors (33403693).

145420115 is a wasteful number, since it uses less digits than its factorization.

145420115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 145420115 is about 12059.0262873915. The cubic root of 145420115 is about 525.8656798714.

Adding to 145420115 its reverse (511024541), we get a palindrome (656444656).

The spelling of 145420115 in words is "one hundred forty-five million, four hundred twenty thousand, one hundred fifteen".