1020244245542 has 4 divisors (see below), whose sum is σ = 1530366368316. Its totient is φ = 510122122770.

The previous prime is 1020244245541. The next prime is 1020244245547. The reversal of 1020244245542 is 2455424420201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020244245541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255061061384 + ... + 255061061387.

It is an arithmetic number, because the mean of its divisors is an integer number (382591592079).

Almost surely, 2^{1020244245542} is an apocalyptic number.

1020244245542 is a deficient number, since it is larger than the sum of its proper divisors (510122122774).

1020244245542 is an equidigital number, since it uses as much as digits as its factorization.

1020244245542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510122122773.

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 1020244245542 its reverse (2455424420201), we get a palindrome (3475668665743).

The spelling of 1020244245542 in words is "one trillion, twenty billion, two hundred forty-four million, two hundred forty-five thousand, five hundred forty-two".