1290157 has 8 divisors (see below), whose sum is σ = 1481760. Its totient is φ = 1110960.

The previous prime is 1290151. The next prime is 1290161. The reversal of 1290157 is 7510921.

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

It is a cyclic number.

It is not a de Polignac number, because 1290157 - 2¹¹ = 1288109 is a prime.

It is a Duffinian number.

1290157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2878 + ... + 3295.

It is an arithmetic number, because the mean of its divisors is an integer number (185220).

2^1290157 is an apocalyptic number.

It is an amenable number.

1290157 is a deficient number, since it is larger than the sum of its proper divisors (191603).

1290157 is a wasteful number, since it uses less digits than its factorization.

1290157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6203.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 1290157 is about 1135.8507824534. The cubic root of 1290157 is about 108.8631393986.

The spelling of 1290157 in words is "one million, two hundred ninety thousand, one hundred fifty-seven".