40742897 has 32 divisors (see below), whose sum is σ = 50641920. Its totient is φ = 32348160.

The previous prime is 40742893. The next prime is 40742903. The reversal of 40742897 is 79824704.

It is not a de Polignac number, because 40742897 - 2² = 40742893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40742893) 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 31 ways as a sum of consecutive naturals, for example, 130013 + ... + 130325.

It is an arithmetic number, because the mean of its divisors is an integer number (1582560).

Almost surely, 2^40742897 is an apocalyptic number.

It is an amenable number.

40742897 is a deficient number, since it is larger than the sum of its proper divisors (9899023).

40742897 is a wasteful number, since it uses less digits than its factorization.

40742897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 40742897 is about 6383.0162932582. The cubic root of 40742897 is about 344.0994422487.

The spelling of 40742897 in words is "forty million, seven hundred forty-two thousand, eight hundred ninety-seven".