42404363656534 has 16 divisors (see below), whose sum is σ = 69389145844416. Its totient is φ = 19274658771400.

The previous prime is 42404363656531. The next prime is 42404363656537. The reversal of 42404363656534 is 43565636340424.

It is an interprime number because it is at equal distance from previous prime (42404363656531) and next prime (42404363656537).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42404363656531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6442929 + ... + 11239219.

It is an arithmetic number, because the mean of its divisors is an integer number (4336821615276).

Almost surely, 2^{42404363656534} is an apocalyptic number.

42404363656534 is a deficient number, since it is larger than the sum of its proper divisors (26984782187882).

42404363656534 is a wasteful number, since it uses less digits than its factorization.

42404363656534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5198171.

The product of its (nonzero) digits is 74649600, while the sum is 55.

Adding to 42404363656534 its reverse (43565636340424), we get a palindrome (85969999996958).

The spelling of 42404363656534 in words is "forty-two trillion, four hundred four billion, three hundred sixty-three million, six hundred fifty-six thousand, five hundred thirty-four".