101431660042 has 4 divisors (see below), whose sum is σ = 152147490066. Its totient is φ = 50715830020.

The previous prime is 101431659919. The next prime is 101431660067. The reversal of 101431660042 is 240066134101.

101431660042 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 240066134101 = 484613 ⋅495377.

It can be written as a sum of positive squares in only one way, i.e., 72613541961 + 28818118081 = 269469^2 + 169759^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25357915009 + ... + 25357915012.

Almost surely, 2^101431660042 is an apocalyptic number.

101431660042 is a deficient number, since it is larger than the sum of its proper divisors (50715830024).

101431660042 is an equidigital number, since it uses as much as digits as its factorization.

101431660042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50715830023.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 101431660042 its reverse (240066134101), we get a palindrome (341497794143).

The spelling of 101431660042 in words is "one hundred one billion, four hundred thirty-one million, six hundred sixty thousand, forty-two".