40142393397 has 32 divisors (see below), whose sum is σ = 60615941760. Its totient is φ = 26246413440.

The previous prime is 40142393381. The next prime is 40142393411. The reversal of 40142393397 is 79339324104.

40142393397 is a `hidden beast` number, since 401 + 4 + 239 + 3 + 3 + 9 + 7 = 666.

It is not a de Polignac number, because 40142393397 - 2⁴ = 40142393381 is a prime.

It is a super-2 number, since 2×40142393397² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142393197) 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, 5850793 + ... + 5857649.

It is an arithmetic number, because the mean of its divisors is an integer number (1894248180).

Almost surely, 2^40142393397 is an apocalyptic number.

It is an amenable number.

40142393397 is a deficient number, since it is larger than the sum of its proper divisors (20473548363).

40142393397 is a wasteful number, since it uses less digits than its factorization.

40142393397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11010 (or 11004 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 40142393397 in words is "forty billion, one hundred forty-two million, three hundred ninety-three thousand, three hundred ninety-seven".