1021203542 has 8 divisors (see below), whose sum is σ = 1598405616. Its totient is φ = 488401672.

The previous prime is 1021203541. The next prime is 1021203553. The reversal of 1021203542 is 2453021201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021203541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11099993 + ... + 11100084.

It is an arithmetic number, because the mean of its divisors is an integer number (199800702).

Almost surely, 2^1021203542 is an apocalyptic number.

1021203542 is a deficient number, since it is larger than the sum of its proper divisors (577202074).

1021203542 is a wasteful number, since it uses less digits than its factorization.

1021203542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22200102.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1021203542 is about 31956.2754713374. The cubic root of 1021203542 is about 1007.0184731274.

Adding to 1021203542 its reverse (2453021201), we get a palindrome (3474224743).

The spelling of 1021203542 in words is "one billion, twenty-one million, two hundred three thousand, five hundred forty-two".