400742573 has 16 divisors (see below), whose sum is σ = 508101120. Its totient is φ = 306970800.

The previous prime is 400742557. The next prime is 400742579. The reversal of 400742573 is 375247004.

It is a cyclic number.

It is not a de Polignac number, because 400742573 - 2⁴ = 400742557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400742579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39563 + ... + 48648.

It is an arithmetic number, because the mean of its divisors is an integer number (31756320).

Almost surely, 2^400742573 is an apocalyptic number.

It is an amenable number.

400742573 is a deficient number, since it is larger than the sum of its proper divisors (107358547).

400742573 is a wasteful number, since it uses less digits than its factorization.

400742573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88288.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 400742573 is about 20018.5557171340. Note that the first 3 decimals coincide. The cubic root of 400742573 is about 737.2619615961.

Adding to 400742573 its reverse (375247004), we get a palindrome (775989577).

The spelling of 400742573 in words is "four hundred million, seven hundred forty-two thousand, five hundred seventy-three".