40257023245042 has 4 divisors (see below), whose sum is σ = 60385534867566. Its totient is φ = 20128511622520.

The previous prime is 40257023245039. The next prime is 40257023245051. The reversal of 40257023245042 is 24054232075204.

40257023245042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 37582159724041 + 2674863521001 = 6130429^2 + 1635501^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 40257023244986 and 40257023245004.

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, 10064255811259 + ... + 10064255811262.

Almost surely, 2^{40257023245042} is an apocalyptic number.

40257023245042 is a deficient number, since it is larger than the sum of its proper divisors (20128511622524).

40257023245042 is a wasteful number, since it uses less digits than its factorization.

40257023245042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20128511622523.

The product of its (nonzero) digits is 537600, while the sum is 40.

The spelling of 40257023245042 in words is "forty trillion, two hundred fifty-seven billion, twenty-three million, two hundred forty-five thousand, forty-two".