1275200146 has 64 divisors (see below), whose sum is σ = 2199674880. Its totient is φ = 549394560.

The previous prime is 1275200137. The next prime is 1275200161. The reversal of 1275200146 is 6410025721.

It is a super-2 number, since 2×1275200146² = 3252270824716842632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5472846 + ... + 5473078.

It is an arithmetic number, because the mean of its divisors is an integer number (34369920).

Almost surely, 2^1275200146 is an apocalyptic number.

1275200146 is a deficient number, since it is larger than the sum of its proper divisors (924474734).

1275200146 is a wasteful number, since it uses less digits than its factorization.

1275200146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1275200146 is about 35709.9446373136. The cubic root of 1275200146 is about 1084.4081791607.

Adding to 1275200146 its reverse (6410025721), we get a palindrome (7685225867).

The spelling of 1275200146 in words is "one billion, two hundred seventy-five million, two hundred thousand, one hundred forty-six".