2154031442 has 8 divisors (see below), whose sum is σ = 3318372876. Its totient is φ = 1047907152.

The previous prime is 2154031433. The next prime is 2154031447. The reversal of 2154031442 is 2441304512.

It can be written as a sum of positive squares in 2 ways, for example, as 2152867201 + 1164241 = 46399^2 + 1079^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2154031447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14554193 + ... + 14554340.

Almost surely, 2^2154031442 is an apocalyptic number.

2154031442 is a deficient number, since it is larger than the sum of its proper divisors (1164341434).

2154031442 is a wasteful number, since it uses less digits than its factorization.

2154031442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29108572.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2154031442 is about 46411.5442751047. The cubic root of 2154031442 is about 1291.4690797056.

Adding to 2154031442 its reverse (2441304512), we get a palindrome (4595335954).

The spelling of 2154031442 in words is "two billion, one hundred fifty-four million, thirty-one thousand, four hundred forty-two".