1240323142 has 8 divisors (see below), whose sum is σ = 1862037432. Its totient is φ = 619644000.

The previous prime is 1240323137. The next prime is 1240323151. The reversal of 1240323142 is 2413230421.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255784 + ... + 260587.

It is an arithmetic number, because the mean of its divisors is an integer number (232754679).

Almost surely, 2^1240323142 is an apocalyptic number.

1240323142 is a deficient number, since it is larger than the sum of its proper divisors (621714290).

1240323142 is a wasteful number, since it uses less digits than its factorization.

1240323142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517574.

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

The square root of 1240323142 is about 35218.2217325066. The cubic root of 1240323142 is about 1074.4303863861.

Adding to 1240323142 its reverse (2413230421), we get a palindrome (3653553563).

The spelling of 1240323142 in words is "one billion, two hundred forty million, three hundred twenty-three thousand, one hundred forty-two".