20420001402 has 16 divisors (see below), whose sum is σ = 41298880320. Its totient is φ = 6730187552.

The previous prime is 20420001383. The next prime is 20420001409. The reversal of 20420001402 is 20410002402.

It is not an unprimeable number, because it can be changed into a prime (20420001409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19119318 + ... + 19120385.

It is an arithmetic number, because the mean of its divisors is an integer number (2581180020).

Almost surely, 2^20420001402 is an apocalyptic number.

20420001402 is an abundant number, since it is smaller than the sum of its proper divisors (20878878918).

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

20420001402 is a wasteful number, since it uses less digits than its factorization.

20420001402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38239797.

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

Adding to 20420001402 its reverse (20410002402), we get a palindrome (40830003804).

It can be divided in two parts, 2042000 and 1402, that added together give a palindrome (2043402).

The spelling of 20420001402 in words is "twenty billion, four hundred twenty million, one thousand, four hundred two".