2155414442 has 8 divisors (see below), whose sum is σ = 3233639232. Its totient is φ = 1077534700.

The previous prime is 2155414381. The next prime is 2155414447. The reversal of 2155414442 is 2444145512.

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

It is a super-2 number, since 2×2155414442² = 9291622833564342728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2155414399 and 2155414408.

It is not an unprimeable number, because it can be changed into a prime (2155414447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70034 + ... + 95997.

It is an arithmetic number, because the mean of its divisors is an integer number (404204904).

Almost surely, 2^2155414442 is an apocalyptic number.

2155414442 is a deficient number, since it is larger than the sum of its proper divisors (1078224790).

2155414442 is a wasteful number, since it uses less digits than its factorization.

2155414442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172524.

The product of its digits is 25600, while the sum is 32.

The square root of 2155414442 is about 46426.4411946468. The cubic root of 2155414442 is about 1291.7454173024.

Adding to 2155414442 its reverse (2444145512), we get a palindrome (4599559954).

The spelling of 2155414442 in words is "two billion, one hundred fifty-five million, four hundred fourteen thousand, four hundred forty-two".