151223431442 has 8 divisors (see below), whose sum is σ = 226836857100. Its totient is φ = 75611145744.

The previous prime is 151223431433. The next prime is 151223431481. The reversal of 151223431442 is 244134322151.

It can be written as a sum of positive squares in 2 ways, for example, as 136701012361 + 14522419081 = 369731^2 + 120509^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 151223431399 and 151223431408.

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, 240284 + ... + 600152.

Almost surely, 2^151223431442 is an apocalyptic number.

151223431442 is a deficient number, since it is larger than the sum of its proper divisors (75613425658).

151223431442 is a wasteful number, since it uses less digits than its factorization.

151223431442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569980.

The product of its digits is 23040, while the sum is 32.

Adding to 151223431442 its reverse (244134322151), we get a palindrome (395357753593).

The spelling of 151223431442 in words is "one hundred fifty-one billion, two hundred twenty-three million, four hundred thirty-one thousand, four hundred forty-two".