154274348421 has 12 divisors (see below), whose sum is σ = 222850863040. Its totient is φ = 102844886760.

The previous prime is 154274348377. The next prime is 154274348443. The reversal of 154274348421 is 124843472451.

154274348421 is a `hidden beast` number, since 1 + 542 + 7 + 4 + 3 + 4 + 84 + 21 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-154274348421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154274348491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174835 + ... + 582336.

Almost surely, 2^154274348421 is an apocalyptic number.

It is an amenable number.

154274348421 is a deficient number, since it is larger than the sum of its proper divisors (68576514619).

154274348421 is a wasteful number, since it uses less digits than its factorization.

154274348421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779816 (or 779813 counting only the distinct ones).

The product of its digits is 860160, while the sum is 45.

The spelling of 154274348421 in words is "one hundred fifty-four billion, two hundred seventy-four million, three hundred forty-eight thousand, four hundred twenty-one".