1297846142 has 4 divisors (see below), whose sum is σ = 1946769216. Its totient is φ = 648923070.

The previous prime is 1297846117. The next prime is 1297846163. The reversal of 1297846142 is 2416487921.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1297846093 and 1297846102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324461534 + ... + 324461537.

It is an arithmetic number, because the mean of its divisors is an integer number (486692304).

Almost surely, 2^1297846142 is an apocalyptic number.

1297846142 is a deficient number, since it is larger than the sum of its proper divisors (648923074).

1297846142 is an equidigital number, since it uses as much as digits as its factorization.

1297846142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648923073.

The product of its digits is 193536, while the sum is 44.

The square root of 1297846142 is about 36025.6317363069. The cubic root of 1297846142 is about 1090.7898049289.

The spelling of 1297846142 in words is "one billion, two hundred ninety-seven million, eight hundred forty-six thousand, one hundred forty-two".