40542001 has 2 divisors, whose sum is σ = 40542002. Its totient is φ = 40542000.

The previous prime is 40541987. The next prime is 40542041. The reversal of 40542001 is 10024504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29419776 + 11122225 = 5424^2 + 3335^2 .

It is a cyclic number.

It is not a de Polignac number, because 40542001 - 2⁹ = 40541489 is a prime.

It is not a weakly prime, because it can be changed into another prime (40542041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20271000 + 20271001.

It is an arithmetic number, because the mean of its divisors is an integer number (20271001).

Almost surely, 2^40542001 is an apocalyptic number.

It is an amenable number.

40542001 is a deficient number, since it is larger than the sum of its proper divisors (1).

40542001 is an equidigital number, since it uses as much as digits as its factorization.

40542001 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 40542001 is about 6367.2600857826. The cubic root of 40542001 is about 343.5329456848.

Adding to 40542001 its reverse (10024504), we get a palindrome (50566505).

The spelling of 40542001 in words is "forty million, five hundred forty-two thousand, one".