140749690 has 32 divisors (see below), whose sum is σ = 258971904. Its totient is φ = 55063680.

The previous prime is 140749649. The next prime is 140749691. The reversal of 140749690 is 96947041.

It is a happy number.

It is a super-2 number, since 2×140749690² = 39620950470192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140749691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96547 + ... + 97993.

It is an arithmetic number, because the mean of its divisors is an integer number (8092872).

Almost surely, 2^140749690 is an apocalyptic number.

140749690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140749690 is a deficient number, since it is larger than the sum of its proper divisors (118222214).

140749690 is a wasteful number, since it uses less digits than its factorization.

140749690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 140749690 is about 11863.7974527552. The cubic root of 140749690 is about 520.1746085222.

The spelling of 140749690 in words is "one hundred forty million, seven hundred forty-nine thousand, six hundred ninety".