1242634 has 4 divisors (see below), whose sum is σ = 1863954. Its totient is φ = 621316.

The previous prime is 1242629. The next prime is 1242641. The reversal of 1242634 is 4362421.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1221025 + 21609 = 1105^2 + 147^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 1 + 2³ + 4⁷ + 2⁹ + 6 + 3¹¹ + 4¹⁰ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310657 + ... + 310660.

2^1242634 is an apocalyptic number.

1242634 is a deficient number, since it is larger than the sum of its proper divisors (621320).

1242634 is an equidigital number, since it uses as much as digits as its factorization.

1242634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621319.

The product of its digits is 1152, while the sum is 22.

The square root of 1242634 is about 1114.7349460746. The cubic root of 1242634 is about 107.5097232957.

The spelling of 1242634 in words is "one million, two hundred forty-two thousand, six hundred thirty-four".