2142135454 has 4 divisors (see below), whose sum is σ = 3213203184. Its totient is φ = 1071067726.

The previous prime is 2142135451. The next prime is 2142135467. The reversal of 2142135454 is 4545312412.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2142135454² = 9177488606567572232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142135451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535533862 + ... + 535533865.

It is an arithmetic number, because the mean of its divisors is an integer number (803300796).

Almost surely, 2^2142135454 is an apocalyptic number.

2142135454 is a deficient number, since it is larger than the sum of its proper divisors (1071067730).

2142135454 is a wasteful number, since it uses less digits than its factorization.

2142135454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071067729.

The product of its digits is 19200, while the sum is 31.

The square root of 2142135454 is about 46283.2092016100. The cubic root of 2142135454 is about 1289.0872404598.

Adding to 2142135454 its reverse (4545312412), we get a palindrome (6687447866).

The spelling of 2142135454 in words is "two billion, one hundred forty-two million, one hundred thirty-five thousand, four hundred fifty-four".