1020345 has 8 divisors (see below), whose sum is σ = 1632576. Its totient is φ = 544176.

The previous prime is 1020337. The next prime is 1020353. The reversal of 1020345 is 5430201.

It is an interprime number because it is at equal distance from previous prime (1020337) and next prime (1020353).

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

It is not a de Polignac number, because 1020345 - 2³ = 1020337 is a prime.

It is a super-2 number, since 2×1020345² = 2082207838050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 68023 = 1020345 / (1 + 0 + 2 + 0 + 3 + 4 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33997 + ... + 34026.

It is an arithmetic number, because the mean of its divisors is an integer number (204072).

2^1020345 is an apocalyptic number.

1020345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020345 is a deficient number, since it is larger than the sum of its proper divisors (612231).

1020345 is an equidigital number, since it uses as much as digits as its factorization.

1020345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68031.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1020345 is about 1010.1212798471. The cubic root of 1020345 is about 100.6736188543.

Adding to 1020345 its reverse (5430201), we get a palindrome (6450546).

The spelling of 1020345 in words is "one million, twenty thousand, three hundred forty-five".