897743403142 has 4 divisors (see below), whose sum is σ = 1346615104716. Its totient is φ = 448871701570.

The previous prime is 897743403131. The next prime is 897743403149. The reversal of 897743403142 is 241304347798.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241304347798 = 2 ⋅120652173899.

It is a self number, because there is not a number n which added to its sum of digits gives 897743403142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897743403149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224435850784 + ... + 224435850787.

It is an arithmetic number, because the mean of its divisors is an integer number (336653776179).

Almost surely, 2^897743403142 is an apocalyptic number.

897743403142 is a deficient number, since it is larger than the sum of its proper divisors (448871701574).

897743403142 is a wasteful number, since it uses less digits than its factorization.

897743403142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448871701573.

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 897743403142 in words is "eight hundred ninety-seven billion, seven hundred forty-three million, four hundred three thousand, one hundred forty-two".