240020020402 has 4 divisors (see below), whose sum is σ = 360030030606. Its totient is φ = 120010010200.

The previous prime is 240020020391. The next prime is 240020020433. The reversal of 240020020402 is 204020020042.

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

It can be written as a sum of positive squares in only one way, i.e., 239579901961 + 440118441 = 489469^2 + 20979^2 .

It is a super-2 number, since 2×240020020402² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60005005099 + ... + 60005005102.

Almost surely, 2^240020020402 is an apocalyptic number.

240020020402 is a deficient number, since it is larger than the sum of its proper divisors (120010010204).

240020020402 is a wasteful number, since it uses less digits than its factorization.

240020020402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120010010203.

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 240020020402 its reverse (204020020042), we get a palindrome (444040040444).

The spelling of 240020020402 in words is "two hundred forty billion, twenty million, twenty thousand, four hundred two".