1020120242 has 16 divisors (see below), whose sum is σ = 1630685952. Its totient is φ = 477502080.

The previous prime is 1020120197. The next prime is 1020120247. The reversal of 1020120242 is 2420210201.

It is not an unprimeable number, because it can be changed into a prime (1020120247) 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 7 ways as a sum of consecutive naturals, for example, 233759 + ... + 238082.

It is an arithmetic number, because the mean of its divisors is an integer number (101917872).

Almost surely, 2^1020120242 is an apocalyptic number.

1020120242 is a deficient number, since it is larger than the sum of its proper divisors (610565710).

1020120242 is a wasteful number, since it uses less digits than its factorization.

1020120242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471913.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1020120242 is about 31939.3212513979. The cubic root of 1020120242 is about 1006.6622630150.

Adding to 1020120242 its reverse (2420210201), we get a palindrome (3440330443).

The spelling of 1020120242 in words is "one billion, twenty million, one hundred twenty thousand, two hundred forty-two".