1072649123 has 32 divisors (see below), whose sum is σ = 1407436800. Its totient is φ = 793742976.

The previous prime is 1072649117. The next prime is 1072649141. The reversal of 1072649123 is 3219462701.

It is not a de Polignac number, because 1072649123 - 2⁶ = 1072649059 is a prime.

It is a super-2 number, since 2×1072649123² = 2301152282145338258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1072649113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132665 + ... + 140517.

It is an arithmetic number, because the mean of its divisors is an integer number (43982400).

Almost surely, 2^1072649123 is an apocalyptic number.

1072649123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1072649123 is a deficient number, since it is larger than the sum of its proper divisors (334787677).

1072649123 is a wasteful number, since it uses less digits than its factorization.

1072649123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7971.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1072649123 is about 32751.3224618488. The cubic root of 1072649123 is about 1023.6525218090.

The spelling of 1072649123 in words is "one billion, seventy-two million, six hundred forty-nine thousand, one hundred twenty-three".