73421090 has 8 divisors (see below), whose sum is σ = 132157980. Its totient is φ = 29368432.

The previous prime is 73421077. The next prime is 73421093. The reversal of 73421090 is 9012437.

It can be written as a sum of positive squares in 2 ways, for example, as 64818601 + 8602489 = 8051^2 + 2933^2 .

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

It is not an unprimeable number, because it can be changed into a prime (73421093) 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, 3671045 + ... + 3671064.

Almost surely, 2^73421090 is an apocalyptic number.

73421090 is a deficient number, since it is larger than the sum of its proper divisors (58736890).

73421090 is a wasteful number, since it uses less digits than its factorization.

73421090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7342116.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 73421090 is about 8568.6107392039. The cubic root of 73421090 is about 418.7359766597.

The spelling of 73421090 in words is "seventy-three million, four hundred twenty-one thousand, ninety".