1297497202542 has 40 divisors (see below), whose sum is σ = 2908046790792. Its totient is φ = 432396133200.

The previous prime is 1297497202511. The next prime is 1297497202549. The reversal of 1297497202542 is 2452027947921.

1297497202542 is a `hidden beast` number, since 1 + 2 + 9 + 7 + 4 + 97 + 2 + 0 + 2 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297497202549) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 268809 + ... + 1633172.

Almost surely, 2^{1297497202542} is an apocalyptic number.

1297497202542 is an abundant number, since it is smaller than the sum of its proper divisors (1610549588250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297497202542 is a wasteful number, since it uses less digits than its factorization.

1297497202542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906206 (or 1906197 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 1297497202542 in words is "one trillion, two hundred ninety-seven billion, four hundred ninety-seven million, two hundred two thousand, five hundred forty-two".