1242043401 has 8 divisors (see below), whose sum is σ = 1728060480. Its totient is φ = 792027632.

The previous prime is 1242043391. The next prime is 1242043421. The reversal of 1242043401 is 1043402421.

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

It is not a de Polignac number, because 1242043401 - 2¹³ = 1242035209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242043421) 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, 9000246 + ... + 9000383.

It is an arithmetic number, because the mean of its divisors is an integer number (216007560).

Almost surely, 2^1242043401 is an apocalyptic number.

It is an amenable number.

1242043401 is a deficient number, since it is larger than the sum of its proper divisors (486017079).

1242043401 is a wasteful number, since it uses less digits than its factorization.

1242043401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18000655.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1242043401 is about 35242.6361244445. The cubic root of 1242043401 is about 1074.9268819207.

Adding to 1242043401 its reverse (1043402421), we get a palindrome (2285445822).

The spelling of 1242043401 in words is "one billion, two hundred forty-two million, forty-three thousand, four hundred one".