140422491 has 40 divisors (see below), whose sum is σ = 229996800. Its totient is φ = 84674160.

The previous prime is 140422489. The next prime is 140422507. The reversal of 140422491 is 194224041.

It is a happy number.

It is not a de Polignac number, because 140422491 - 2¹ = 140422489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (140422691) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 319650 + ... + 320088.

It is an arithmetic number, because the mean of its divisors is an integer number (5749920).

Almost surely, 2^140422491 is an apocalyptic number.

140422491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140422491 is a deficient number, since it is larger than the sum of its proper divisors (89574309).

140422491 is a wasteful number, since it uses less digits than its factorization.

140422491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 140422491 is about 11849.9996202532. Note that the first 3 decimals coincide. The cubic root of 140422491 is about 519.7712146910.

The spelling of 140422491 in words is "one hundred forty million, four hundred twenty-two thousand, four hundred ninety-one".