40123402502 has 8 divisors (see below), whose sum is σ = 60188371056. Its totient is φ = 20060612152.

The previous prime is 40123402477. The next prime is 40123402519. The reversal of 40123402502 is 20520432104.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497693 + ... + 572664.

It is an arithmetic number, because the mean of its divisors is an integer number (7523546382).

Almost surely, 2^40123402502 is an apocalyptic number.

40123402502 is a deficient number, since it is larger than the sum of its proper divisors (20064968554).

40123402502 is a wasteful number, since it uses less digits than its factorization.

40123402502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089102.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 40123402502 its reverse (20520432104), we get a palindrome (60643834606).

The spelling of 40123402502 in words is "forty billion, one hundred twenty-three million, four hundred two thousand, five hundred two".