1240214242 has 4 divisors (see below), whose sum is σ = 1860321366. Its totient is φ = 620107120.

The previous prime is 1240214231. The next prime is 1240214251. The reversal of 1240214242 is 2424120421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2424120421 = 39217 ⋅61813.

It can be written as a sum of positive squares in only one way, i.e., 1129564881 + 110649361 = 33609^2 + 10519^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310053559 + ... + 310053562.

Almost surely, 2^1240214242 is an apocalyptic number.

1240214242 is a deficient number, since it is larger than the sum of its proper divisors (620107124).

1240214242 is an equidigital number, since it uses as much as digits as its factorization.

1240214242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620107123.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1240214242 is about 35216.6756239143. The cubic root of 1240214242 is about 1074.3989405772.

Adding to 1240214242 its reverse (2424120421), we get a palindrome (3664334663).

The spelling of 1240214242 in words is "one billion, two hundred forty million, two hundred fourteen thousand, two hundred forty-two".