40002523542 has 64 divisors (see below), whose sum is σ = 93053007360. Its totient is φ = 12714067872.

The previous prime is 40002523541. The next prime is 40002523559. The reversal of 40002523542 is 24532520004.

It is a happy number.

40002523542 is a `hidden beast` number, since 400 + 0 + 25 + 235 + 4 + 2 = 666.

It is a super-3 number, since 3×40002523542³ (a number of 33 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40002523541) 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, 342913 + ... + 444515.

It is an arithmetic number, because the mean of its divisors is an integer number (1453953240).

Almost surely, 2^40002523542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40002523542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46526503680).

40002523542 is an abundant number, since it is smaller than the sum of its proper divisors (53050483818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40002523542 is a wasteful number, since it uses less digits than its factorization.

40002523542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101954 (or 101948 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The spelling of 40002523542 in words is "forty billion, two million, five hundred twenty-three thousand, five hundred forty-two".