2151127742 has 8 divisors (see below), whose sum is σ = 3416497056. Its totient is φ = 1012295392.

The previous prime is 2151127733. The next prime is 2151127747. The reversal of 2151127742 is 2477211512.

2151127742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 2151127699 and 2151127708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151127747) 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, 31634198 + ... + 31634265.

It is an arithmetic number, because the mean of its divisors is an integer number (427062132).

Almost surely, 2^2151127742 is an apocalyptic number.

2151127742 is a deficient number, since it is larger than the sum of its proper divisors (1265369314).

2151127742 is a wasteful number, since it uses less digits than its factorization.

2151127742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63268482.

The product of its digits is 7840, while the sum is 32.

The square root of 2151127742 is about 46380.2516379547. The cubic root of 2151127742 is about 1290.8885055301. Note that the first 3 decimals are identical.

The spelling of 2151127742 in words is "two billion, one hundred fifty-one million, one hundred twenty-seven thousand, seven hundred forty-two".