1290129 has 16 divisors (see below), whose sum is σ = 1797312. Its totient is φ = 822528.

The previous prime is 1290109. The next prime is 1290131. The reversal of 1290129 is 9210921.

It is not a de Polignac number, because 1290129 - 2¹³ = 1281937 is a prime.

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

1290129 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1290099 and 1290108.

It is not an unprimeable number, because it can be changed into a prime (1290109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9349 + ... + 9485.

It is an arithmetic number, because the mean of its divisors is an integer number (112332).

2^1290129 is an apocalyptic number.

It is an amenable number.

1290129 is a deficient number, since it is larger than the sum of its proper divisors (507183).

1290129 is a wasteful number, since it uses less digits than its factorization.

1290129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1290129 is about 1135.8384568239. The cubic root of 1290129 is about 108.8623518485.

The spelling of 1290129 in words is "one million, two hundred ninety thousand, one hundred twenty-nine".