42543535601023 has 16 divisors (see below), whose sum is σ = 43733338653312. Its totient is φ = 41363046900000.

The previous prime is 42543535600949. The next prime is 42543535601027. The reversal of 42543535601023 is 32010653534524.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42543535601023 is a prime.

It is a super-2 number, since 2×42543535601023² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42543535601027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16279608 + ... + 18711298.

It is an arithmetic number, because the mean of its divisors is an integer number (2733333665832).

Almost surely, 2^{42543535601023} is an apocalyptic number.

42543535601023 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42543535601023 is a deficient number, since it is larger than the sum of its proper divisors (1189803052289).

42543535601023 is a wasteful number, since it uses less digits than its factorization.

42543535601023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433606.

The product of its (nonzero) digits is 1296000, while the sum is 43.

The spelling of 42543535601023 in words is "forty-two trillion, five hundred forty-three billion, five hundred thirty-five million, six hundred one thousand, twenty-three".