1072345 has 4 divisors (see below), whose sum is σ = 1286820. Its totient is φ = 857872.

The previous prime is 1072339. The next prime is 1072363. The reversal of 1072345 is 5432701.

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

It can be written as a sum of positive squares in 2 ways, for example, as 839056 + 233289 = 916^2 + 483^2 .

It is a cyclic number.

It is not a de Polignac number, because 1072345 - 2¹³ = 1064153 is a prime.

It is a super-2 number, since 2×1072345² = 2299847598050, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107230 + ... + 107239.

It is an arithmetic number, because the mean of its divisors is an integer number (321705).

2^1072345 is an apocalyptic number.

It is an amenable number.

1072345 is a deficient number, since it is larger than the sum of its proper divisors (214475).

1072345 is an equidigital number, since it uses as much as digits as its factorization.

1072345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214474.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 1072345 is about 1035.5409214512. The cubic root of 1072345 is about 102.3555768921.

The spelling of 1072345 in words is "one million, seventy-two thousand, three hundred forty-five".