20002042154 has 8 divisors (see below), whose sum is σ = 30009337380. Its totient is φ = 9998929696.

The previous prime is 20002042141. The next prime is 20002042163. The reversal of 20002042154 is 45124020002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14756661529 + 5245380625 = 121477^2 + 72425^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1033709 + ... + 1052880.

Almost surely, 2^20002042154 is an apocalyptic number.

20002042154 is a deficient number, since it is larger than the sum of its proper divisors (10007295226).

20002042154 is a wasteful number, since it uses less digits than its factorization.

20002042154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091384.

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 20002042154 its reverse (45124020002), we get a palindrome (65126062156).

The spelling of 20002042154 in words is "twenty billion, two million, forty-two thousand, one hundred fifty-four".