1297432106 has 8 divisors (see below), whose sum is σ = 1948741824. Its totient is φ = 647851500.

The previous prime is 1297432091. The next prime is 1297432109. The reversal of 1297432106 is 6012347921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1297432109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430400 + ... + 433403.

It is an arithmetic number, because the mean of its divisors is an integer number (243592728).

Almost surely, 2^1297432106 is an apocalyptic number.

1297432106 is a deficient number, since it is larger than the sum of its proper divisors (651309718).

1297432106 is an equidigital number, since it uses as much as digits as its factorization.

1297432106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864556.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1297432106 is about 36019.8848693329. The cubic root of 1297432106 is about 1090.6737988099.

The spelling of 1297432106 in words is "one billion, two hundred ninety-seven million, four hundred thirty-two thousand, one hundred six".