742157442 has 96 divisors (see below), whose sum is σ = 1846790400. Its totient is φ = 213497856.

The previous prime is 742157417. The next prime is 742157467. The reversal of 742157442 is 244751247.

742157442 is a `hidden beast` number, since 7 + 42 + 1 + 574 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (742157417) and next prime (742157467).

It is a junction number, because it is equal to n+sod(n) for n = 742157397 and 742157406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 350178 + ... + 352290.

It is an arithmetic number, because the mean of its divisors is an integer number (19237400).

Almost surely, 2^742157442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742157442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923395200).

742157442 is an abundant number, since it is smaller than the sum of its proper divisors (1104632958).

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

742157442 is a wasteful number, since it uses less digits than its factorization.

742157442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232 (or 2229 counting only the distinct ones).

The product of its digits is 62720, while the sum is 36.

The square root of 742157442 is about 27242.5667292933. The cubic root of 742157442 is about 905.3823326802.

The spelling of 742157442 in words is "seven hundred forty-two million, one hundred fifty-seven thousand, four hundred forty-two".