1242322406 has 16 divisors (see below), whose sum is σ = 2010204000. Its totient is φ = 572415168.

The previous prime is 1242322373. The next prime is 1242322409. The reversal of 1242322406 is 6042232421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242322409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24311 + ... + 55458.

It is an arithmetic number, because the mean of its divisors is an integer number (125637750).

Almost surely, 2^1242322406 is an apocalyptic number.

1242322406 is a deficient number, since it is larger than the sum of its proper divisors (767881594).

1242322406 is a wasteful number, since it uses less digits than its factorization.

1242322406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80383.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1242322406 is about 35246.5942468205. The cubic root of 1242322406 is about 1075.0073642185.

Adding to 1242322406 its reverse (6042232421), we get a palindrome (7284554827).

The spelling of 1242322406 in words is "one billion, two hundred forty-two million, three hundred twenty-two thousand, four hundred six".