1240220342 has 8 divisors (see below), whose sum is σ = 1860510600. Its totient is φ = 620050144.

The previous prime is 1240220291. The next prime is 1240220347. The reversal of 1240220342 is 2430220421.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240220347) 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, 3134 + ... + 49902.

It is an arithmetic number, because the mean of its divisors is an integer number (232563825).

Almost surely, 2^1240220342 is an apocalyptic number.

1240220342 is a deficient number, since it is larger than the sum of its proper divisors (620290258).

1240220342 is a wasteful number, since it uses less digits than its factorization.

1240220342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60030.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1240220342 is about 35216.7622305061. The cubic root of 1240220342 is about 1074.4007020532.

Adding to 1240220342 its reverse (2430220421), we get a palindrome (3670440763).

The spelling of 1240220342 in words is "one billion, two hundred forty million, two hundred twenty thousand, three hundred forty-two".