2142545770 has 8 divisors (see below), whose sum is σ = 3856582404. Its totient is φ = 857018304.

The previous prime is 2142545759. The next prime is 2142545777. The reversal of 2142545770 is 775452412.

It can be written as a sum of positive squares in 2 ways, for example, as 2078721649 + 63824121 = 45593^2 + 7989^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2142545777) 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, 107127279 + ... + 107127298.

Almost surely, 2^2142545770 is an apocalyptic number.

2142545770 is a deficient number, since it is larger than the sum of its proper divisors (1714036634).

2142545770 is a wasteful number, since it uses less digits than its factorization.

2142545770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214254584.

The product of its (nonzero) digits is 78400, while the sum is 37.

The square root of 2142545770 is about 46287.6416551978. The cubic root of 2142545770 is about 1289.1695414103.

The spelling of 2142545770 in words is "two billion, one hundred forty-two million, five hundred forty-five thousand, seven hundred seventy".