1292138 has 8 divisors (see below), whose sum is σ = 1944000. Its totient is φ = 644140.

The previous prime is 1292131. The next prime is 1292141. The reversal of 1292138 is 8312921.

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

It is a super-2 number, since 2×1292138² = 3339241222088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1292131) 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 3 ways as a sum of consecutive naturals, for example, 113 + ... + 1611.

It is an arithmetic number, because the mean of its divisors is an integer number (243000).

2^1292138 is an apocalyptic number.

1292138 is a deficient number, since it is larger than the sum of its proper divisors (651862).

1292138 is a wasteful number, since it uses less digits than its factorization.

1292138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932.

The product of its digits is 864, while the sum is 26.

The square root of 1292138 is about 1136.7224815231. The cubic root of 1292138 is about 108.9188296736.

The spelling of 1292138 in words is "one million, two hundred ninety-two thousand, one hundred thirty-eight".