40123402 has 16 divisors (see below), whose sum is σ = 69112800. Its totient is φ = 17277840.

The previous prime is 40123399. The next prime is 40123403. The reversal of 40123402 is 20432104.

It is not an unprimeable number, because it can be changed into a prime (40123403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47577 + ... + 48412.

It is an arithmetic number, because the mean of its divisors is an integer number (4319550).

Almost surely, 2^40123402 is an apocalyptic number.

40123402 is a deficient number, since it is larger than the sum of its proper divisors (28989398).

40123402 is a wasteful number, since it uses less digits than its factorization.

40123402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96021.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40123402 is about 6334.3035923454. The cubic root of 40123402 is about 342.3465190457.

Adding to 40123402 its reverse (20432104), we get a palindrome (60555506).

The spelling of 40123402 in words is "forty million, one hundred twenty-three thousand, four hundred two".