40245321434 has 4 divisors (see below), whose sum is σ = 60367982154. Its totient is φ = 20122660716.

The previous prime is 40245321427. The next prime is 40245321491. The reversal of 40245321434 is 43412354204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37770756409 + 2474565025 = 194347^2 + 49745^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40245321434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061330357 + ... + 10061330360.

Almost surely, 2^40245321434 is an apocalyptic number.

40245321434 is a deficient number, since it is larger than the sum of its proper divisors (20122660720).

40245321434 is a wasteful number, since it uses less digits than its factorization.

40245321434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20122660719.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 40245321434 its reverse (43412354204), we get a palindrome (83657675638).

The spelling of 40245321434 in words is "forty billion, two hundred forty-five million, three hundred twenty-one thousand, four hundred thirty-four".