1292129252 has 6 divisors (see below), whose sum is σ = 2261226198. Its totient is φ = 646064624.

The previous prime is 1292129243. The next prime is 1292129261. The reversal of 1292129252 is 2529212921.

It is an interprime number because it is at equal distance from previous prime (1292129243) and next prime (1292129261).

It can be written as a sum of positive squares in only one way, i.e., 1245807616 + 46321636 = 35296^2 + 6806^2 .

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

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 161516153 + ... + 161516160.

It is an arithmetic number, because the mean of its divisors is an integer number (376871033).

Almost surely, 2^1292129252 is an apocalyptic number.

It is an amenable number.

1292129252 is a deficient number, since it is larger than the sum of its proper divisors (969096946).

1292129252 is a wasteful number, since it uses less digits than its factorization.

1292129252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323032317 (or 323032315 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 1292129252 is about 35946.1994096733. The cubic root of 1292129252 is about 1089.1858387319.

The spelling of 1292129252 in words is "one billion, two hundred ninety-two million, one hundred twenty-nine thousand, two hundred fifty-two".