115421001 has 8 divisors (see below), whose sum is σ = 154283904. Its totient is φ = 76752720.

The previous prime is 115420997. The next prime is 115421003. The reversal of 115421001 is 100124511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115421001 - 2² = 115420997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115421003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47265 + ... + 49646.

It is an arithmetic number, because the mean of its divisors is an integer number (19285488).

Almost surely, 2^115421001 is an apocalyptic number.

It is an amenable number.

115421001 is a deficient number, since it is larger than the sum of its proper divisors (38862903).

115421001 is an equidigital number, since it uses as much as digits as its factorization.

115421001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97311.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 115421001 is about 10743.4166353167. The cubic root of 115421001 is about 486.8871119791.

Adding to 115421001 its reverse (100124511), we get a palindrome (215545512).

It can be divided in two parts, 1154 and 21001, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 115421001 in words is "one hundred fifteen million, four hundred twenty-one thousand, one".