115420545 has 20 divisors (see below), whose sum is σ = 206902740. Its totient is φ = 61557408.

The previous prime is 115420541. The next prime is 115420561. The reversal of 115420545 is 545024511.

115420545 is a `hidden beast` number, since 115 + 4 + 2 + 0 + 545 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 86936976 + 28483569 = 9324^2 + 5337^2 .

It is not a de Polignac number, because 115420545 - 2² = 115420541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (115420541) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 142090 + ... + 142899.

It is an arithmetic number, because the mean of its divisors is an integer number (10345137).

Almost surely, 2^115420545 is an apocalyptic number.

115420545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115420545 is a deficient number, since it is larger than the sum of its proper divisors (91482195).

115420545 is an equidigital number, since it uses as much as digits as its factorization.

115420545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285006 (or 284997 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 115420545 is about 10743.3954129968. The cubic root of 115420545 is about 486.8864707878.

The spelling of 115420545 in words is "one hundred fifteen million, four hundred twenty thousand, five hundred forty-five".