1234987 has 4 divisors (see below), whose sum is σ = 1330000. Its totient is φ = 1139976.

The previous prime is 1234969. The next prime is 1234991. The reversal of 1234987 is 7894321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1234987 - 2¹⁵ = 1202219 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47487 + ... + 47512.

It is an arithmetic number, because the mean of its divisors is an integer number (332500).

2^1234987 is an apocalyptic number.

1234987 is a deficient number, since it is larger than the sum of its proper divisors (95013).

1234987 is an equidigital number, since it uses as much as digits as its factorization.

1234987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95012.

The product of its digits is 12096, while the sum is 34.

The square root of 1234987 is about 1111.2996895527. The cubic root of 1234987 is about 107.2887359784.

The spelling of 1234987 in words is "one million, two hundred thirty-four thousand, nine hundred eighty-seven".