2154245042 has 32 divisors (see below), whose sum is σ = 3506993280. Its totient is φ = 989089920.

The previous prime is 2154245039. The next prime is 2154245069. The reversal of 2154245042 is 2405424512.

It is a junction number, because it is equal to n+sod(n) for n = 2154244996 and 2154245014.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240203 + ... + 249009.

It is an arithmetic number, because the mean of its divisors is an integer number (109593540).

Almost surely, 2^2154245042 is an apocalyptic number.

2154245042 is a deficient number, since it is larger than the sum of its proper divisors (1352748238).

2154245042 is a wasteful number, since it uses less digits than its factorization.

2154245042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9026.

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 2154245042 is about 46413.8453696739. The cubic root of 2154245042 is about 1291.5117669001.

Adding to 2154245042 its reverse (2405424512), we get a palindrome (4559669554).

The spelling of 2154245042 in words is "two billion, one hundred fifty-four million, two hundred forty-five thousand, forty-two".