101232145 has 16 divisors (see below), whose sum is σ = 139167360. Its totient is φ = 69249024.

The previous prime is 101232139. The next prime is 101232151. The reversal of 101232145 is 541232101.

It is an interprime number because it is at equal distance from previous prime (101232139) and next prime (101232151).

It is a 3-Lehmer number, since φ(101232145) divides (101232145-1)³.

It is a cyclic number.

It is not a de Polignac number, because 101232145 - 2³ = 101232137 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12241 + ... + 18769.

It is an arithmetic number, because the mean of its divisors is an integer number (8697960).

It is a Poulet number, since it divides 2^101232144-1.

Almost surely, 2^101232145 is an apocalyptic number.

It is an amenable number.

101232145 is a deficient number, since it is larger than the sum of its proper divisors (37935215).

101232145 is an equidigital number, since it uses as much as digits as its factorization.

101232145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6984.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 101232145 is about 10061.4186375481. The cubic root of 101232145 is about 466.0574769311.

Adding to 101232145 its reverse (541232101), we get a palindrome (642464246).

The spelling of 101232145 in words is "one hundred one million, two hundred thirty-two thousand, one hundred forty-five".