45392742440 has 32 divisors (see below), whose sum is σ = 108141535080. Its totient is φ = 17089032192.

The previous prime is 45392742377. The next prime is 45392742481. The reversal of 45392742440 is 4424729354.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44870254276 + 522488164 = 211826^2 + 22858^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45392742391 and 45392742400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33376337 + ... + 33377696.

Almost surely, 2^45392742440 is an apocalyptic number.

45392742440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45392742440 is an abundant number, since it is smaller than the sum of its proper divisors (62748792640).

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

45392742440 is a wasteful number, since it uses less digits than its factorization.

45392742440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66754061 (or 66754057 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 45392742440 in words is "forty-five billion, three hundred ninety-two million, seven hundred forty-two thousand, four hundred forty".