1051142687 has 4 divisors (see below), whose sum is σ = 1201305936. Its totient is φ = 900979440.

The previous prime is 1051142663. The next prime is 1051142689. The reversal of 1051142687 is 7862411501.

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

It is a cyclic number.

It is not a de Polignac number, because 1051142687 - 2¹⁶ = 1051077151 is a prime.

It is a super-2 number, since 2×1051142687² = 2209801896867159938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051142689) 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, 75081614 + ... + 75081627.

It is an arithmetic number, because the mean of its divisors is an integer number (300326484).

Almost surely, 2^1051142687 is an apocalyptic number.

1051142687 is a deficient number, since it is larger than the sum of its proper divisors (150163249).

1051142687 is an equidigital number, since it uses as much as digits as its factorization.

1051142687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150163248.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1051142687 is about 32421.3307407330. The cubic root of 1051142687 is about 1016.7649288285.

The spelling of 1051142687 in words is "one billion, fifty-one million, one hundred forty-two thousand, six hundred eighty-seven".