1240534424 has 8 divisors (see below), whose sum is σ = 2326002060. Its totient is φ = 620267208.

The previous prime is 1240534423. The next prime is 1240534429. The reversal of 1240534424 is 4244350421.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240534423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77533394 + ... + 77533409.

Almost surely, 2^1240534424 is an apocalyptic number.

It is an amenable number.

1240534424 is a deficient number, since it is larger than the sum of its proper divisors (1085467636).

1240534424 is a wasteful number, since it uses less digits than its factorization.

1240534424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155066809 (or 155066805 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 1240534424 is about 35221.2212167608. The cubic root of 1240534424 is about 1074.4913906262.

Adding to 1240534424 its reverse (4244350421), we get a palindrome (5484884845).

The spelling of 1240534424 in words is "one billion, two hundred forty million, five hundred thirty-four thousand, four hundred twenty-four".