7422001 has 2 divisors, whose sum is σ = 7422002. Its totient is φ = 7422000.

The previous prime is 7421993. The next prime is 7422011. The reversal of 7422001 is 1002247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7317025 + 104976 = 2705^2 + 324^2 .

It is an emirp because it is prime and its reverse (1002247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7422001 - 2³ = 7421993 is a prime.

7422001 is a lucky number.

It is equal to p₅₀₃₃₅₀ and since 7422001 and 503350 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (7422011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3711000 + 3711001.

It is an arithmetic number, because the mean of its divisors is an integer number (3711001).

Almost surely, 2^7422001 is an apocalyptic number.

It is an amenable number.

7422001 is a deficient number, since it is larger than the sum of its proper divisors (1).

7422001 is an equidigital number, since it uses as much as digits as its factorization.

7422001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 7422001 is about 2724.3349647207. The cubic root of 7422001 is about 195.0624476741.

Adding to 7422001 its reverse (1002247), we get a palindrome (8424248).

The spelling of 7422001 in words is "seven million, four hundred twenty-two thousand, one".