1247429000 has 32 divisors (see below), whose sum is σ = 2918986200. Its totient is φ = 498971200.

The previous prime is 1247428999. The next prime is 1247429089. The reversal of 1247429000 is 9247421.

It can be written as a sum of positive squares in 4 ways, for example, as 498093124 + 749335876 = 22318^2 + 27374^2 .

It is a super-2 number, since 2×1247429000² = 3112158220082000000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622715 + ... + 624714.

Almost surely, 2^1247429000 is an apocalyptic number.

1247429000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1247429000 is an abundant number, since it is smaller than the sum of its proper divisors (1671557200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1247429000 is a wasteful number, since it uses less digits than its factorization.

1247429000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247450 (or 1247436 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1247429000 is about 35318.9609133678. The cubic root of 1247429000 is about 1076.4782978817.

The spelling of 1247429000 in words is "one billion, two hundred forty-seven million, four hundred twenty-nine thousand".