2051131742 has 24 divisors (see below), whose sum is σ = 3402142128. Its totient is φ = 926731520.

The previous prime is 2051131739. The next prime is 2051131751. The reversal of 2051131742 is 2471311502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15038 + ... + 65790.

It is an arithmetic number, because the mean of its divisors is an integer number (141755922).

Almost surely, 2^2051131742 is an apocalyptic number.

2051131742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2051131742 is a deficient number, since it is larger than the sum of its proper divisors (1351010386).

2051131742 is a wasteful number, since it uses less digits than its factorization.

2051131742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50944 (or 50933 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2051131742 is about 45289.4219658410. The cubic root of 2051131742 is about 1270.5678205708.

The spelling of 2051131742 in words is "two billion, fifty-one million, one hundred thirty-one thousand, seven hundred forty-two".