1242373401 has 6 divisors (see below), whose sum is σ = 1794539370. Its totient is φ = 828248928.

The previous prime is 1242373373. The next prime is 1242373409. The reversal of 1242373401 is 1043732421.

It is a happy number.

1242373401 is a `hidden beast` number, since 1 + 24 + 237 + 3 + 401 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1127347776 + 115025625 = 33576^2 + 10725^2 .

It is not a de Polignac number, because 1242373401 - 2⁶ = 1242373337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242373409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69020736 + ... + 69020753.

It is an arithmetic number, because the mean of its divisors is an integer number (299089895).

Almost surely, 2^1242373401 is an apocalyptic number.

It is an amenable number.

1242373401 is a deficient number, since it is larger than the sum of its proper divisors (552165969).

1242373401 is a wasteful number, since it uses less digits than its factorization.

1242373401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138041495 (or 138041492 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1242373401 is about 35247.3176426235. The cubic root of 1242373401 is about 1075.0220730279.

The spelling of 1242373401 in words is "one billion, two hundred forty-two million, three hundred seventy-three thousand, four hundred one".