1531200420242 has 8 divisors (see below), whose sum is σ = 2329149935232. Its totient is φ = 754817108500.

The previous prime is 1531200420229. The next prime is 1531200420247. The reversal of 1531200420242 is 2420240021351.

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

It is not an unprimeable number, because it can be changed into a prime (1531200420247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5391550634 + ... + 5391550917.

It is an arithmetic number, because the mean of its divisors is an integer number (291143741904).

Almost surely, 2^{1531200420242} is an apocalyptic number.

1531200420242 is a deficient number, since it is larger than the sum of its proper divisors (797949514990).

1531200420242 is a wasteful number, since it uses less digits than its factorization.

1531200420242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10783101624.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 1531200420242 its reverse (2420240021351), we get a palindrome (3951440441593).

The spelling of 1531200420242 in words is "one trillion, five hundred thirty-one billion, two hundred million, four hundred twenty thousand, two hundred forty-two".