402136073 has 2 divisors, whose sum is σ = 402136074. Its totient is φ = 402136072.

The previous prime is 402136051. The next prime is 402136081. The reversal of 402136073 is 370631204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371255824 + 30880249 = 19268^2 + 5557^2 .

It is a cyclic number.

It is not a de Polignac number, because 402136073 - 2¹⁸ = 401873929 is a prime.

It is a super-2 number, since 2×402136073² = 323426842415722658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (402136013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201068036 + 201068037.

It is an arithmetic number, because the mean of its divisors is an integer number (201068037).

Almost surely, 2^402136073 is an apocalyptic number.

It is an amenable number.

402136073 is a deficient number, since it is larger than the sum of its proper divisors (1).

402136073 is an equidigital number, since it uses as much as digits as its factorization.

402136073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 402136073 is about 20053.3307208553. The cubic root of 402136073 is about 738.1155320091.

Adding to 402136073 its reverse (370631204), we get a palindrome (772767277).

The spelling of 402136073 in words is "four hundred two million, one hundred thirty-six thousand, seventy-three".