41221690 has 8 divisors (see below), whose sum is σ = 74199060. Its totient is φ = 16488672.

The previous prime is 41221669. The next prime is 41221693. The reversal of 41221690 is 9612214.

It can be written as a sum of positive squares in 2 ways, for example, as 34703881 + 6517809 = 5891^2 + 2553^2 .

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

It is a super-2 number, since 2×41221690² = 3398455452912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (41221693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2061075 + ... + 2061094.

Almost surely, 2^41221690 is an apocalyptic number.

41221690 is a deficient number, since it is larger than the sum of its proper divisors (32977370).

41221690 is a wasteful number, since it uses less digits than its factorization.

41221690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4122176.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 41221690 is about 6420.4119805508. The cubic root of 41221690 is about 345.4420993375.

The spelling of 41221690 in words is "forty-one million, two hundred twenty-one thousand, six hundred ninety".