2142120442 has 16 divisors (see below), whose sum is σ = 4006043712. Its totient is φ = 834592320.

The previous prime is 2142120371. The next prime is 2142120503. The reversal of 2142120442 is 2440212412.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6954783 + ... + 6955090.

It is an arithmetic number, because the mean of its divisors is an integer number (250377732).

Almost surely, 2^2142120442 is an apocalyptic number.

2142120442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2142120442 is a deficient number, since it is larger than the sum of its proper divisors (1863923270).

2142120442 is a wasteful number, since it uses less digits than its factorization.

2142120442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13909893.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 2142120442 is about 46283.0470258819. The cubic root of 2142120442 is about 1289.0842291621.

Adding to 2142120442 its reverse (2440212412), we get a palindrome (4582332854).

The spelling of 2142120442 in words is "two billion, one hundred forty-two million, one hundred twenty thousand, four hundred forty-two".