1297454145 has 32 divisors (see below), whose sum is σ = 2242998912. Its totient is φ = 636636672.

The previous prime is 1297454101. The next prime is 1297454153. The reversal of 1297454145 is 5414547921.

It is not a de Polignac number, because 1297454145 - 2¹¹ = 1297452097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1297454097 and 1297454106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49029 + ... + 70701.

It is an arithmetic number, because the mean of its divisors is an integer number (70093716).

Almost surely, 2^1297454145 is an apocalyptic number.

1297454145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1297454145 is a deficient number, since it is larger than the sum of its proper divisors (945544767).

1297454145 is a wasteful number, since it uses less digits than its factorization.

1297454145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22001.

The product of its digits is 201600, while the sum is 42.

The square root of 1297454145 is about 36020.1907962742. The cubic root of 1297454145 is about 1090.6799743993.

The spelling of 1297454145 in words is "one billion, two hundred ninety-seven million, four hundred fifty-four thousand, one hundred forty-five".