107146821 has 8 divisors (see below), whose sum is σ = 142935840. Its totient is φ = 71394512.

The previous prime is 107146813. The next prime is 107146847. The reversal of 107146821 is 128641701.

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 107146821 - 2³ = 107146813 is a prime.

It is a super-2 number, since 2×107146821² = 22960882500812082, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107146021) 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, 1431 + ... + 14708.

It is an arithmetic number, because the mean of its divisors is an integer number (17866980).

Almost surely, 2^107146821 is an apocalyptic number.

It is an amenable number.

107146821 is a deficient number, since it is larger than the sum of its proper divisors (35789019).

107146821 is a wasteful number, since it uses less digits than its factorization.

107146821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18355.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 107146821 is about 10351.1748608552. The cubic root of 107146821 is about 474.9629828955.

The spelling of 107146821 in words is "one hundred seven million, one hundred forty-six thousand, eight hundred twenty-one".