101642045 has 8 divisors (see below), whose sum is σ = 122701824. Its totient is φ = 80826064.

The previous prime is 101642041. The next prime is 101642063. The reversal of 101642045 is 540246101.

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

It is a cyclic number.

It is not a de Polignac number, because 101642045 - 2² = 101642041 is a prime.

It is a super-2 number, since 2×101642045² = 20662210623564050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101642045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101642041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60029 + ... + 61698.

It is an arithmetic number, because the mean of its divisors is an integer number (15337728).

Almost surely, 2^101642045 is an apocalyptic number.

It is an amenable number.

101642045 is a deficient number, since it is larger than the sum of its proper divisors (21059779).

101642045 is a wasteful number, since it uses less digits than its factorization.

101642045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121899.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 101642045 is about 10081.7679501167. The cubic root of 101642045 is about 466.6856690108.

Adding to 101642045 its reverse (540246101), we get a palindrome (641888146).

The spelling of 101642045 in words is "one hundred one million, six hundred forty-two thousand, forty-five".