102973821 has 8 divisors (see below), whose sum is σ = 139625760. Its totient is φ = 67485552.

The previous prime is 102973817. The next prime is 102973823. The reversal of 102973821 is 128379201.

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

It is not a de Polignac number, because 102973821 - 2² = 102973817 is a prime.

It is a super-2 number, since 2×102973821² = 21207215622680082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102973823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290710 + ... + 291063.

It is an arithmetic number, because the mean of its divisors is an integer number (17453220).

Almost surely, 2^102973821 is an apocalyptic number.

It is an amenable number.

102973821 is a deficient number, since it is larger than the sum of its proper divisors (36651939).

102973821 is an equidigital number, since it uses as much as digits as its factorization.

102973821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581835.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 102973821 is about 10147.6017363710. The cubic root of 102973821 is about 468.7150977035.

The spelling of 102973821 in words is "one hundred two million, nine hundred seventy-three thousand, eight hundred twenty-one".