1051142540 has 24 divisors (see below), whose sum is σ = 2522742432. Its totient is φ = 360391680.

The previous prime is 1051142531. The next prime is 1051142557. The reversal of 1051142540 is 452411501.

It is a super-2 number, since 2×1051142540² = 2209801278795303200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3753941 + ... + 3754220.

It is an arithmetic number, because the mean of its divisors is an integer number (105114268).

Almost surely, 2^1051142540 is an apocalyptic number.

1051142540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051142540 is an abundant number, since it is smaller than the sum of its proper divisors (1471599892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1051142540 is a wasteful number, since it uses less digits than its factorization.

1051142540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7508177 (or 7508175 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1051142540 is about 32421.3284737069. The cubic root of 1051142540 is about 1016.7648814311.

The spelling of 1051142540 in words is "one billion, fifty-one million, one hundred forty-two thousand, five hundred forty".