42500401 has 2 divisors, whose sum is σ = 42500402. Its totient is φ = 42500400.

The previous prime is 42500377. The next prime is 42500431. The reversal of 42500401 is 10400524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37834801 + 4665600 = 6151^2 + 2160^2 .

It is a cyclic number.

It is not a de Polignac number, because 42500401 - 2⁷ = 42500273 is a prime.

It is not a weakly prime, because it can be changed into another prime (42500431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21250200 + 21250201.

It is an arithmetic number, because the mean of its divisors is an integer number (21250201).

Almost surely, 2^42500401 is an apocalyptic number.

It is an amenable number.

42500401 is a deficient number, since it is larger than the sum of its proper divisors (1).

42500401 is an equidigital number, since it uses as much as digits as its factorization.

42500401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 42500401 is about 6519.2331604262. The cubic root of 42500401 is about 348.9776999076.

Adding to 42500401 its reverse (10400524), we get a palindrome (52900925).

The spelling of 42500401 in words is "forty-two million, five hundred thousand, four hundred one".