2120040402 has 8 divisors (see below), whose sum is σ = 4240080816. Its totient is φ = 706680132.

The previous prime is 2120040397. The next prime is 2120040409. The reversal of 2120040402 is 2040400212.

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

2120040402 is an admirable number.

It is a super-2 number, since 2×2120040402² = 8989142612224643208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2120040409) 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, 176670028 + ... + 176670039.

It is an arithmetic number, because the mean of its divisors is an integer number (530010102).

Almost surely, 2^2120040402 is an apocalyptic number.

2120040402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120040402 is a wasteful number, since it uses less digits than its factorization.

2120040402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353340072.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2120040402 is about 46043.8964684789. The cubic root of 2120040402 is about 1284.6398183034.

Adding to 2120040402 its reverse (2040400212), we get a palindrome (4160440614).

The spelling of 2120040402 in words is "two billion, one hundred twenty million, forty thousand, four hundred two".