1247020467 has 16 divisors (see below), whose sum is σ = 2072969472. Its totient is φ = 647802720.

The previous prime is 1247020447. The next prime is 1247020487. The reversal of 1247020467 is 7640207421.

It is an interprime number because it is at equal distance from previous prime (1247020447) and next prime (1247020487).

It is not a de Polignac number, because 1247020467 - 2¹² = 1247016371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1247020447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2698948 + ... + 2699409.

It is an arithmetic number, because the mean of its divisors is an integer number (129560592).

Almost surely, 2^1247020467 is an apocalyptic number.

1247020467 is a deficient number, since it is larger than the sum of its proper divisors (825949005).

1247020467 is a wasteful number, since it uses less digits than its factorization.

1247020467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5398378.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 1247020467 is about 35313.1769598828. The cubic root of 1247020467 is about 1076.3607695023.

Adding to 1247020467 its reverse (7640207421), we get a palindrome (8887227888).

The spelling of 1247020467 in words is "one billion, two hundred forty-seven million, twenty thousand, four hundred sixty-seven".